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Pulse Or Digital Communications > Transceivers > Modems (data Sets) Modems (data Sets)Modems (data Sets) patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.11/15/07 - 20070263711 - Operating dsl subscriber lines An apparatus includes a plurality of DSL modems. Each DSL modem is configured to be connected to a corresponding DSL subscriber line. A first of the DSL modems is configured to transmit a data stream to a DSL subscriber via inter-line cross-talk between the one of the DSL subscriber lines ... 11/15/07 - 20070263710 - Distributed multiradio controller A system for managing the simultaneous operation of a plurality of radio modems in a single wireless communication device (WCD). The multiradio control may be integrated into a WCD as a subsystem responsible for scheduling wireless communications by temporarily enabling or disabling a plurality of radio modems. The multiradio control ... 11/15/07 - 20070263709 - Multiradio control interface A system for managing the simultaneous operation of a plurality of radio modems in a single wireless communication device (WCD). The multiradio control may be integrated into the WCD as a subsystem responsible for scheduling wireless communications by temporarily enabling or disabling the plurality of radio modems within the device. ... 11/08/07 - 20070258514 - Apparatus for and method of far-end crosstalk (fext) detection and estimation A novel and useful mechanism for the detection and estimation of far-end cross talk (FEXT) caused by transmissions over adjacent wire pairs or cables. The detection and estimation technique of the invention can be used to identify FET impairments in Ethernet and DSL systems. The detection and estimation scheme is ... 10/25/07 - 20070248154 - Splitterless multicarrier modem A modem for use in Digital Subscriber Line communications transmits and receives data over the local subscriber loop in common with voice information over the loop, while avoiding the need for voice/data splitters. The modem responds to disruptions associated with “disturbance events” such as on-hook to off-hook transitions and the ... 10/25/07 - 20070248153 - Discrete multi-tone (dmt) system and method that communicates a data pump data stream between a general purpose cpu and a dsp via a buffering scheme The apparatus and method herein splits the function of a digital subscriber line (DSL) modem data pump between a digital signal processor (DSP 106) and a general purpose host central processing unit (CPU 102). The DSP (106) handles all front end data pump processing such as interface to an analog ... 10/18/07 - 20070242737 - Fast initialization using seamless rate adaptation A method for initializing modems in a multicarrier transmission system to establish a communication link between the transmitter and the receiver. An exemplary embodiment includes the steps of providing a predetermined parameter value that approximates a corresponding actual parameter value of the communication link, establishing a data communication link between ... 09/27/07 - 20070223568 - Preamble for synchronization A method and system for managing performance data of communication lines, such as digital subscriber lines, is disclosed. The method includes receiving from a remote used device an identifier for a particular communications line at a web server; initiating a real-time performance analysis of the line at a network end ... 09/20/07 - 20070217491 - Dmt symbol repetitioin in the presence of impulse noise With the current initialization procedures defined in the VDSL and ADSL standards, even though the xDSL system could operate in Showtime in an impulse noise environment where symbols are being corrupted, the transceivers would not be able to reach Showtime because initialization would fail due to initialization message failure. Through ... 09/20/07 - 20070217490 - Modem An apparatus and method for processing a high data rate signal are disclosed. The apparatus includes a plurality of data processing units and a switching arrangement to repeatedly switch a received high first data rate signal between inputs of the plurality of data processing units on a time division basis. ... 09/20/07 - 20070217489 - Hitless modem pool expansion at steady state In a communications system having a first modem transmitting via a communications channel, a method for adding a second modem, the method including learning crosstalk caused by transmissions from the first modem to the second modem while the second modem is in a transmitting state insufficient to cause crosstalk interference ... 08/30/07 - 20070201542 - Circuit arrangement for suppressing interfering signals in transmitted signals emitted by a modem of a household appliance A circuit arrangement for suppressing interfering signals in transmitted signals emitted by a modem of a household appliance equipped with a transmitting device for transmitting and a receiving device for receiving data signals, the modem containing a transmitting branch and a receiving branch. A low-pass filter for attenuating the interfering ... 08/23/07 - 20070195872 - Non-chronological system statistics A communications device apparatus and method is detailed that allows for improved system statistics gathering of network communication links, dataports, and system status. The improved communications device apparatus and method utilizes a relative time reference or clock for the determination of the starting and ending of system statistics gathering time ... 08/02/07 - 20070177662 - Traffic shaping between the dmt processor and data link layer processor of a line-card A line card is proposed in which one or more DMT processing modules 1 communicate with a data link layer platform, such as an ATM, POSPHY or Ethernet processor. The data relating to a single symbol is transmitted between the data link layer platform and a given one of DMT ... 07/12/07 - 20070160124 - Modem for communicating data over a voice channel of a communications system A modem used for communicating data. The modem may include a packet generator and modulator. The modulator may include an electronic device configured to select at least one frequency from at least three or more candidate frequencies. At least one oscillator may be in communication with the electronic device and ... 07/12/07 - 20070160123 - System for isolating an object in a broadcast signal A system for isolating an object in a broadcast signal is disclosed. The system scans the broadcast signal for at least one identifiable object and selectively filters the broadcast signal. In selectively filtering the broadcast signal, the identifiable object is selectively passed or removed from the broadcast signal. The identifiable ... 07/05/07 - 20070153886 - Isolator and a modem device using the isolator A communication system is provided including a transceiver and an application controller to transmit and receive signals through the transceiver. An isolator which insulates and separates the transceiver and application controller includes primary and secondary side circuits insulated from each other on a substrate and a capacitive insulating means to ... 07/05/07 - 20070153885 - High-frequency homepna A network device includes a HomePNA modem and means for synchronizing its clock with clocks of other HomePNA modems in the network in order to communicate at a higher frequency band. In one embodiment, the synchronization is with pilot signals. In another, it is by correcting for clock differences. The ... 06/28/07 - 20070147488 - Apparatus and method for communication between a digital unit and a remote rf unit in a broadband wireless communication system Provided are an apparatus and method for communication between a digital unit and a remote radio frequency unit in a broadband wireless communication system. A frame structure of Inphase/Quadrature (IQ) sample data based on various channel bandwidths and sampling frequencies is defined, and then the IQ sample data are generated ... 06/28/07 - 20070147487 - Apparatus, method and computer program product providing dynamic modulation setting combined with power sequences Disclosed herein are apparatus, methods and computer program products for transmitting signals in different frequency sub-bands used in a particular cell of a cellular wireless communications system in accordance with a power sequence and for selecting modulation schemes to be used in transmitting the signals in the different frequency sub-bands ... 06/28/07 - 20070147486 - Signal processing within a wireless modem There is provided a wireless modem PHY having a selectable IF signal format output, e.g. between baseband, complex IF and low IF. ... 06/21/07 - 20070140325 - Method and system for improving modem performance, computer program product therefor A method controls performance of modem arrangements wherein a plurality of tones having associated gains with a maximum reachable value are used for carrying respective bitstreams. The method includes at least one of selectively swapping bits between the tones in the plurality and selectively changing the tone gains to optimized ... 06/07/07 - 20070127560 - Demodulator circuit of rfid system Provided is a demodulator circuit allowing a tag or transponder to efficiently recover data of an input amplitude signal at very low power in a wireless communication system such as a radio frequency identification (RFID) system. The demodulator connects an output of a voltage multiplier to a low-current path by ... 05/31/07 - 20070121712 - Characterizing broadband communication networks A remote testing device, including a cable modem circuit, requests an IP address from a remote cable modem termination system (CMTS) and receives back IP connection information including adaptive equalizer coefficients, which represent compensation and/or correction for transmission path noise. Using the equalizer coefficients, the remote testing device can determine ... 04/26/07 - 20070091990 - Outdoor unit programming system A system that provides a wireless broadband connection between base stations and customer sites is described. The system includes indoor units within the base stations and customer sites and communicate across cables to outdoor units. The indoor units linked to routers, switches and other devices and services. The outdoor units ... 04/12/07 - 20070081582 - Dynamic digital communication system control Control of a digital communication system having a plurality of communication lines on which signals are transmitted and received is implemented using a variety of methods and systems. According to one embodiment of the present invention, a method is implemented where the signals are affected by interference during transmission and ... 04/05/07 - 20070076790 - Method and apparatus for testing a network using a spare receiver A spare receiver in a CMTS is used to non-invasively test the upstream signal quality of a network without disrupting a subscriber's operations. A modem registered with a receiver on the network is selected as a testing modem. The spare receiver is RF connected to the receiver and the testing ... 04/05/07 - 20070076789 - Method and apparatus for preventing loss of service from hardware failure in a network A spare receiver in a CMTS is used to prevent loss of service to subscribers during a failure of a receiver. The beginning of a mass modem de-registration event is detected by the operator or automatically by the CMTS. Upon detection of the beginning of the mass modem de-registration event, ... 03/29/07 - 20070071079 - Selectable hybrid circuitry for transmission systems and method therefor A method is provided that includes selectively engaging impedance circuits one at a time from a plurality of selectable impedance circuits in-line with a communication channel. Each of the plurality of selectable impedance circuits includes a hybrid circuit responsive to a modem and to the communication channel. The method further ... 03/22/07 - 20070064783 - Transmission/reception apparatus and transmission/reception method for enabling coexistence of systems An in-home-system master station of an in-home communication system detects a frequency band (a channel number corresponding to a data communication subchannel) or a time slot used by each station of an access communication system, using a coexistence signal subchannel. Based on the detected information, the in-home-system master station determines ... 03/22/07 - 20070064782 - Fsk data communications using voice modem A method for transferring data over a communication link using a data rate and a voice modem not designed to provide communications at the data rate, includes generating, in a processor, a modulated FSK signal from an outgoing data stream. The voice modem, in playback mode, plays the modulated FSK ... 03/15/07 - 20070058706 - Apparatus and method for detecting asynchronous transmission in a wireless communication system An apparatus and a method are provided for detecting asynchronous transmission in a wireless communication system. In a transmitter, a correlator correlates a baseband transmission sample signal with a preamble signal. A decider detects a peak among correlations received from the correlator and determines whether transmission of the transmission sample ... 03/15/07 - 20070058705 - System and method to transmit a data stream The present disclosure is directed to a method and system of transmitting data. The method includes providing a data signal and providing at least one redundant data signal. The method also includes transmitting a data stream, wherein the data signal and the at least one redundant data signal are combined ... 03/15/07 - 20070058704 - Dsl modem and transformer A digital subscriber line (DSL) modem comprising a line interface transformer (40; 50; 80; 100; 130) having a primary circuit (42; 52; 81; 131) for coupling to a transmission line and a secondary circuit (44; 56; 82; 132) for outputting a signal transmitted over said transmission line, each circuit being ... 03/01/07 - 20070047633 - Systems and methods for resolving signal-to-noise ratio margin difference in dual latency discrete multi-tone-based xdsl systems under colored noise conditions Systems and methods for resolving signal-to-noise ratio margin difference n dual latency discrete multi-tone (DMT)-based xDSL systems under colored noise conditions. Rather than assuming a constant power spectral density (PSD) for noise over fast and interleaved data paths of a dual latency system, band edges vulnerable to colored noise are ... 03/01/07 - 20070047632 - Systems and methods for minimum-power leakage windowing for vdsl using least square technique Systems and method for minimum power leakage windowing for VDSL using least squares technique are provided. A coefficient vector is defined for the first N samples. The window is then defined in terms of this coefficient vector. The leakage power of the Kth tone is defined in terms of the ... 03/01/07 - 20070047631 - Method for determining crosstalk coupling and crosstalk determining unit for integration in digital data transmission systems A method for determining crosstalk coupling between a plurality of transmission lines in digital data transmission systems, in particular DSL networks. Firstly, at least one test signal (TS) is generated having a unique identification code (UIC) in the frequency domain (f), said code (UIC) being associated with a first transmission ... 02/22/07 - 20070041436 - Circuit for generating dying gasp signals and electronic device utilizing the same An exemplary circuit for generating dying gasp signals (30) includes a power loss detecting circuit (320), a Digital Signal Processor (DSP) (310), a unipolar switch circuit (330), and a capacitor (C1). The power loss detecting circuit is used for detecting power loss statuses and generating interrupt signals, and includes a ... 02/15/07 - 20070036207 - Near-end crosstalk noise minimization and power reduction for digital subscriber loops To optimize the performance of DSL modems in the same cable bundle, the size and position of the group of subcarriers used for transmission is intelligently selected when the bit rate necessary for making the transmission is less than the total available bandwidth provided by all subcarriers. By intelligently selecting ... 02/15/07 - 20070036206 - Method and device for facsimile communication capable of completing communication even when there is disruption to communication This patent specification describes a MODEM device which includes a detector configured to detect a synchronization signal transmitted from a source MODEM in a resynchronization process of a primary channel and a timer configured to count up starting from a beginning of a detection of the synchronization signal, and send ... 02/08/07 - 20070030889 - Voice modem protocol for uninterrupted data connection A back-up solution is presented for a DSL modem that guarantees essentially uninterrupted data connections in the event of a failure in the DSL connection. When a DSL data connection fails, e.g., due to changes of the local loop characteristics in the high frequency band, a voice-band modem is used ... 02/01/07 - 20070025431 - System and method for rapid generation of low par q-mode signals In a data communication system, a transmitter of an ADSL modem uses a PRBS generator to generate a plurality of ADSL signals. The transmitter computes the Peak to Average (e.g., root-mean-square) (“PAR”) ratio of each of the ADSL signals generated. The ADSL signal having the lowest PAR is determined, and ... 01/25/07 - 20070019718 - Method and system for suppressing an interference signal In a method for suppressing an interference signal during a transmission of data symbols between two transceivers, a transmit data symbol sequence is transmitted from a first transceiver to a second transceiver. An interference signal, which has occurred during the transmission of the transmit data symbol sequence, is detected in ... 01/25/07 - 20070019717 - Methods and apparatus for implementing and using an in-band rate indicator Downlink traffic channel data rate options and methods of indicating to a wireless terminal a utilized downlink data rate option are described. The downlink traffic channel rate option for a segment is conveyed using an assignment signal and/or a block in the downlink traffic channel segment which is not used ... 01/25/07 - 20070019716 - Modem using a shared multi-stage spectral transform for demodulation A communication apparatus includes a modem coupled to receive digital data as a discrete multi-tone (DMT) modulated signal. The modem and a host processor co-operate to perform a staged spectral transform on the DMT modulated signal. At least one stage of the spectral transform is performed by the modem. At ... 01/11/07 - 20070009020 - System and method to determine power cutback in communication systems A system and method for adaptively determining power cutback in communication system is described. According to an embodiment, the receiver determines noise on each sub-channel for different internal gain settings. It calculates what gain setting would be optimal from an SNR point of view and what power cutback value would ... 01/11/07 - 20070009019 - Fast initialization using seamless rate adaptation A method for initializing modems in a multicarrier transmission system to establish a communication link between the transmitter and the receiver. An exemplary embodiment includes the steps of providing a predetermined parameter value that approximates a corresponding actual parameter value of the communication link, establishing a data communication link between ... 01/11/07 - 20070009018 - Signaling system In a signaling system, a first signal and a plurality of second signals are received via a signaling channel. A first received data value is generated in one of at least two states according to whether the first signal exceeds an average of the second signals. ... 01/04/07 - 20070002940 - Modem with exclusively selectable echo canceller and high pass filter for near-end signal removal A communication apparatus includes a modem coupled to a subscriber line carrying a composite signal. The composite signal includes a near-end transmitted signal and a far-end transmitted signal. The modem includes a high pass filter and an echo canceller. The composite signal is exclusively provided to a selected one of ... 12/28/06 - 20060291546 - Device and method for enabling communications signals using a medium voltage power line In one embodiment, a device for enabling communications signals over a medium voltage power line includes a first modem, a second modem, a third modem, and one or more switches. The first modem is electrically coupled to a medium voltage power line and is adapted to receive communications signals from ... 12/14/06 - 20060280238 - Vectored dsl nesting Methods, apparatus, systems and computer program products address one-sided vectoring systems that include a bonded-line set having two or more bonded DSL lines within a vectored group wherein other techniques such as precoding, tonal predictive GDFEs, tonal rotors and ordering techniques can be implemented. The performance of lines within a ... 12/14/06 - 20060280237 - Dsl system loading and ordering Loading and ordering techniques are provided for one-sided and two-sided vectored line groups, as well as loading methodologies that also can be used on a single line, in communication systems such as DSL binders. For single-user lines, bits and energy are optimally allocated for a given set of parameters, which ... 12/14/06 - 20060280236 - User-preference-based dsl system Operator-controlled implementations of user preferences are provided when feasible. User preference data is obtained by the operator and compared to operational characteristics and parameters of a communication system, such as a DSL system, to determine whether one or more of the user preferences can be implemented in the communication system. ... 12/14/06 - 20060280235 - User-preference-based dsl system Methods, apparatus and computer program products allow a user of DSL or the like to implement user preferences to the extent feasible in light of operational limits and conditions. In some embodiments, an operational profile is imposed on the user. User preference data is evaluated to determine the extent to ... 12/07/06 - 20060274825 - Tonal precoding Precoding mitigates or removes interference signals (especially crosstalk) among multiple users with interconnected transmitters in vectored DSL systems and the like. Efficient implementation is provided of the R matrix in RQ factorization that characterizes multi-user downstream vector channels (such as DMT VDSL one-sided or two-sided transmission channels). A set of ... 11/30/06 - 20060268966 - Phantom use in dsl systems Superimposing phantom-mode signals reinforces existing differentially driven DSL downstream signals in a vectored binder of DSLs or reinforces upstream vectored signals in a binder of differentially excited twisted pairs, thus expanding the extra transmission modes of the previous GDSL multi-wire two-sided-excitation invention to the case where coordination can only occur ... 11/16/06 - 20060256846 - Method for seamless bit rate adaptation for multicarrier dsl A method of mitigating transmission delay fluctuations in a communication system having a variable data rate and block-oriented subsystems, such as interleavers. The method comprises interspersing dummy data with genuine data to form a combined data stream for the subsystems. When the data rate decreases, the rate at which dummy ... 11/09/06 - 20060251161 - Bit rate matching system and method A method and system of matching a bit rate to a transmit bit rate used to transmit data on a data link are disclosed. A bit pattern in data received on the data link is detected using a bit rate. Where the detected bit pattern comprises one of a plurality ... 11/09/06 - 20060251160 - Fdr single ended line testing (selt) system and method for dsl modems A single ended line testing (SELT) method using a Frequency-Domain Reflectometry (FDR) that uses one or more echo signals originated by transmitting a periodic multi-tone sign, e.g., a REVERB signal, reflected from the hybrid and analyzes it in frequency domain. The REVERB signal is part of the ADSL modem training ... 11/09/06 - 20060251159 - Residential voice over broadband A method and system for facilitating voice over broadband communication for use in residences and small businesses is disclosed. A voice signal from an analog telephone is frequency upconverted. The frequency upconverted voice signal is communicated over pre-existing analog telephone wiring. The communicated frequency upconverted voice signal is then frequency ... 10/19/06 - 20060233228 - Modem testing system and method A modem testing system is provided for testing interoperability of plural items of customer premises equipment (CPEs) (10) and plural central offices (COs) (60). The modem testing system includes a line simulator (50), a switch (40), and a controller (30). The line simulator is connected to the CPEs and COs ... 09/28/06 - 20060215742 - Optimizing for impulse noise protection in a dsl system In a digital subscriber line (DSL) network, a net coding gain penalty is determined for provision of impulse noise protection. FEC coding, interleaver depth, and framing parameters are selected to maximize the impulse noise protection while not causing an excessive increase in transmit power or equivalently, loss of net coding ... 09/21/06 - 20060209941 - Method for synchronizing exporter and exciter clocks A method for synchronizing an exciter clock with a modem frame clock in a broadcasting system comprises the steps of receiving a plurality of modem frame pulses that are representative of the start of modem frames of audio signals and data signals, wherein timing of the modem frame pulses is ... 09/21/06 - 20060209940 - Installation for distributing digital signals The invention concerns a digital signal distributing installation comprising a first coupler to be connected to an ADSL line input and to an electric power distribution line, an ADSL modem with a first and a second port, and a second coupler to be connected to the first port of the ... 09/14/06 - 20060203898 - Transmit power adjustment based on estimated electrical length of a loop A method for estimating electrical length of a loop in a digital subscriber line (DSL) system begins by estimating an electrical length of a loop for each of a plurality signals based on a known power level of the plurality of signals, a known frequency for each of the plurality ... 09/07/06 - 20060198430 - Dsl state and line profile control Transitions between states and/or profiles for a line in a communication system, such as a DSL system, are controlled by evaluating the current state of the line and one or more target states. Evaluation of the feasibility of staying in the current state or moving to one of the target ... 08/17/06 - 20060182169 - Systems and methods for characterizing transmission lines using broadband signals in a multi-carrier dsl environment Using DSL modems as data collectors, the modems processes the data to, for example, allow easier interpretation of the line characteristics. In particular, the modems postprocess the data including calibration, filter compensation, determination of the SNR medley from the bits and gains tables and rate conversion. The interpretation process uses ... 08/10/06 - 20060176942 - On-line reconfiguration and synchronization protocol for multi-carrier dsl A communication system is disclosed, and includes a transmission system operable to transmit data to a receiver over a communications medium. The transmission system is configured to provide an indication of a change in system configuration as a synchronization flag temporarily assigned to a plurality of data sub-channels to effectuate ... 07/27/06 - 20060165161 - Communication system for home automation using advanced adsl Communication system for home automation using advanced asymmetric digital subscriber line (ADSL) is provided. Communication system for home automation using advanced ADSL includes: a home automation communication server means for providing home automation service; a home automation service channel means for interchanging data through wire or wireless line of baseband ... 07/20/06 - 20060159162 - System and method for improving dsl performance A system and method is described for determining a condition of a communication line, such as the absence of a filter device on a digital subscriber line (DSL). A first signal characterized by a high upstream power is activated over the line, and a first set of parameters associated with ... 07/13/06 - 20060153285 - Dynamic interleaver depth change for a general convolutional interleaver A system and method for changing the data rate over an interleaved latency path. The method overcomes shortfalls of the ADSL2 seamless rate adaptation (SRA) and dynamic rate repartitioning (DRR). ... 07/06/06 - 20060146923 - Automatic switching between dsl and analog on a single rj-11 dsl/analog combo modem A modem for providing both DSL and analog signal connection capability with a single RJ-11 jack via an automatic switching mechanism. The switching mechanism is controlled by software, which is responsive to user connection preference (i.e., for DSL or analog connection) and/or the detection that a DSL service is available. ... 07/06/06 - 20060146922 - System and method for improving bit-loading in discrete multitone-based digital subscriber line modems A system and method for improving bit-loading in discrete multitone (DMT)-based digital subscriber line (DSL) modems. In one embodiment, the system includes: (1) a model generator configured to generate a model containing a calculated total bit loading for an assumed gross coding gain and estimated total bit loadings for a ... 07/06/06 - 20060146921 - Multi-mode signal modification circuit with common mode bypass A signal modification circuit is provided for use with multi-mode formatted data in accordance with a common mode component and a high frequency component formatted in accordance with a differential mode. The circuit includes an active module that modifies the high frequency component to generate a modified and enhanced high ... 06/15/06 - 20060126709 - Vdsl transmission between two groups of modems The transmission of data between two VDSL modems respectively belonging to two groups of a same number of modems connected two by two by lines of a same cable, including, for each carrier, the steps of determining a possible set of values according to the number of bits assigned to ... 06/15/06 - 20060126708 - Noise measurement method and a related receiving digital subscriber line modem The present invention relates to a Noise measurement method and a related device for noise measurement in a Digital Subscriber Line transmission system. Such a system comprises a transmitting Digital Subscriber Line modem and a receiving Digital Subscriber Line modem where the transmitting Digital Subscriber Line modem is coupled over ... 06/15/06 - 20060126707 - Method and system for virtual exchange reference impact (veri) for use in mixed spectrum management in dsl A method and apparatus implements a Virtual Exchange Reference Impact (VERI) technique to define a pattern to shape the spectrum of a cabinet deployed system to minimize its impact, e.g., FEXT, into an exchange deployed system while achieving effective cabinet system performance, e.g., in terms of data transmission rate. The ... 06/15/06 - 20060126706 - Auto-reboot modem Various embodiments of systems, methods, and modems are provided. One embodiment is a modem comprising: means for detecting when the modem loses communication with a network; and means for automatically rebooting the modem a predetermined number of times until communication is re-established with the network. ... 06/08/06 - 20060120443 - Multi-client adsl modem A multi-client ADSL modem network (10) that can be configured for a home or office network when multiple ADSL client modems (18) are installed in different communication terminals (22). One ADSL modem (14) at a central office (12) coordinates the remote multi-client modems (18) for communication over a single twisted ... 06/08/06 - 20060120442 - System and method to determine loop characteristics Systems and methods are disclosed for determining characteristics of a communications medium, such as a subscriber loop. In one embodiment, a system is disclosed to determine at least one characteristic associated with a subscriber loop. The system includes memory that stores data indicative of signal responses and loop characteristics for ... 06/01/06 - 20060114977 - System and method to mitigate interference in dsl systems Systems and methods are disclosed for determining mitigating noise in multi-pair communication system. A receiver coordinated system can include an error estimator that estimates noise for a first line of a plurality lines and provides an error estimate for the first line. A noise predictor applies a predetermined cross-correlation value ... 06/01/06 - 20060114976 - System and method of echo cancellation An economic low-complexity system and method for echo cancellation are disclosed. The system and method are particularly suited for multi-carrier VDSL using the U0 band. The techniques taught herein may be implemented in VDSL and VDSL2 systems and used to receive signals in three bands (e.g., U0, U1 and U2) ... 05/25/06 - 20060109894 - Adaptive modem Disclosed is a modem that uses information from prior modem calls in a current modem call if the current communication line has the same characteristics as the communication line of a prior call. During modem training, a determination is made as to whether the characteristics of the current communication line ... 05/18/06 - 20060104339 - Systems and methods for adaptive vdsl with variable sampling frequency and time-domain equalizer A method and system for enhancing reach-performance of a multi-carrier VDSL System estimates loop length, estimates maximum available bandwidth that can be utilized at that particular loop length, optimally selects an FFT size and sampling rate, and decides whether to apply a time domain equalization to its receiver and if ... 05/11/06 - 20060098725 - Dsl system estimation including known dsl line scanning and bad splice detection capability Estimates of a communication system configuration, such as a DSL system, are based on operational data collected from a network element management system, protocol, users and/or the like. The operational data collected from the system can include performance-characterizing operational data that typically is available in an ADSL system via element-management-system ... 05/04/06 - 20060093025 - Network-unit comprising a modem for exchanging modem signals Network-units (1) comprising modems (2) and agents (5) give their modems (2) a larger freedom by supplying a mask or a set of masks from the agent (5) to the modem (2), which mask or set of masks defines extreme parameter values such as extreme values of power spectral densities, ... 04/20/06 - 20060083295 - Throughput maximization in wireless communication systems A communication method comprising characterizing a communications channel, determining a data rate and optionally a power allocation strategy that maximizes channel throughput, and configuring a transmitter to send a transmit signal with said data rate and said optional power allocation strategy. ... 04/13/06 - 20060078044 - Various methods and apparatuses for imulse noise mitigation Methods and apparatuses for reducing effects of impulse noise in a DSL transmitter receiver device are described. According to certain embodiment, the method includes using a periodicity associated with the impulse noise affecting a DSL transmitter receiver device to determine data frames that are affected by the impulse noise, and ... 03/23/06 - 20060062289 - System and method for tone ordering in discrete multi-tone (dmt) modems A system and method for reordering tones of a DMT signal within a communication system is described. Cross tone correlated noise in a received signal is identified and rearranged such that tones with correlated noise are spread out throughout the received signal before being processed by a decoder such as, ... 03/23/06 - 20060062288 - Short loop adsl power spectral density management A digital subscriber line (DSL) modem for a service area interface, which controls the power of its downstream transmissions to minimize far-end crosstalk (FEXT), is disclosed. The disclosed modem has an interface to a low-attenuation upstream facility, such as fiber optic, and includes a digital transceiver and an analog front ... 03/23/06 - 20060062287 - Multi-carrier modem transmitter with controlled transmit signal quality degradation for improving stability of operation A telecommunication system with a modem (MCO) having a controlling module (CCO) coupled to a data transmission module (DTM) comprising a transmitter (TX) adapted to transmit channels via a communication line (LN), the channels transporting user data (UD) by means of signals (STX) with modulation having a bitload that is ... 03/16/06 - 20060056499 - Multi-pair broadband transmission system A high-speed data transmission network system (8) is provided. The system (8) includes a plurality of subscriber premises (12) that transmit a first upstream signal (28) on a first frequency band to a central office or a remote terminal (10), which is in communication with the plurality of subscriber premises ... 03/09/06 - 20060050776 - Vdsl system based on dmt line coding, and method for determining length of cyclic prefix samples using the system Disclosed is a VDSL (very high bit-rate digital subscriber line) system on the DMT line coding method basis and a method for determining a length of cyclic prefix samples using the system. The VDSL system comprises a transmitter data including cyclic prefix samples through a channel; a receiver for receiving ... 03/02/06 - 20060045174 - Method and apparatus for synchronizing a transmitter clock of an analog modem to a remote clock A method and apparatus for synchronizing a transmitter clock of an analog modem to a codec sampling clock within a central office are provided. The analog modem includes a transmitter, a receiver and a codec. The analog modem also includes a transmitter re-sampler and a receiver re-sampler coupled to the ... 03/02/06 - 20060045173 - Method and apparatus for improving upstream pulse code modulation connect rates of an analog modem A method and apparatus for improving upstream connect rates of an analog modem are provided. The analog modem includes a modem transmitter, a modem receiver, a transmitter re-sampler, a receiver re-sampler and a codec. A sampling rate converter is provided between the modem transmitter and the transmitter re-sampler. The sampling ... 02/23/06 - 20060039457 - System and method for controlling line driver power in digital subscriber line modems A low power DSL modem transmitter, suitable for incorporation in integrated DSLAM server line cards, transmits full power physical frames which include a control channel and a data field when data is available for transmission and physical frames having only a control channel or a control channel and a low ... 02/23/06 - 20060039456 - Crosstalk agent for access network nodes A crosstalk agent for integration in or connection to an access node (DSLAM) automatically gathers quantitative information indicative for the crosstalk coupling between lines (LINE1, LINE2, LINE3, LINE4) connected to the access node (DSLAM). The information may be extracted from an access node MIB each time the on/off state of ... 02/23/06 - 20060039455 - Composite waveform for transmitting an increased amount of data over an analog medium, and devices and methods for producing, encoding, transmitting and decoding same The present invention is directed towards data transmission over telecommunications networks, and more specifically towards a system and method for enabling high-speed communications through the use of a composite waveform for transmitting an increased amount of data. The present invention has particular application to high-speed data transmissions over analog telephone ... 02/23/06 - 20060039454 - Interference cancellation system A DSL or other communication system includes a modem or other communication device having at least one antenna that is configured to collect interference data relating to interference noise affecting communication signals being received by the communication device. The interference may include RF interference, such as AM radio interference, crosstalk ... 02/16/06 - 20060034360 - Fast initialization using seamless rate adaptation A method for initializing modems in a multicarrier transmission system to establish a communication link between the transmitter and the receiver. An exemplary embodiment includes the steps of providing a predetermined parameter value that approximates a corresponding actual parameter value of the communication link, establishing a data communication link between ... 02/16/06 - 20060034359 - Xdsl multistandard driver circuit An electric circuit for amplifying an xDSL signal comprises an operational amplifier and a signal monitoring circuit. The operational amplifier is configured to amplify the xDSL signal, is powered by a variable voltage supply and has a gain which is adjustable by an operating mode control signal. The signal monitoring ... 02/09/06 - 20060029125 - Layout processing method, information processing apparatus, and computer program In a layout processing method of dynamically changing the layout of a template having a plurality of data areas in accordance with data presented to each of the plurality of data areas, a set of data areas associated by a link is extracted. For the plurality of data areas contained ... 01/26/06 - 20060018373 - Adsl encoder and decoder The present invention is an ADSL encoder and decoder. Wherein, the ADSL encoder comprises a digital signal processor, a buffer, a bit extractor and a constellation point mapper. The digital signal processor delivers data bits to the buffer, and again the delivered data bits are transmitted to the bit extractor ... 01/05/06 - 20060002458 - Method and apparatus to identify a remote communication apparatus and enhance communication performance based on the identification A type or brand of remote communication device is identified by measuring one or more characteristics associated with one or more signals sent by the remote communication device. The measured characteristics differ among different devices and/or manufacturers and are compared to known characteristics of one or more signals associated with ... 01/05/06 - 20060002457 - Multi-carrier communication using adaptive tone-pruning An apparatus, system, and method are described for multi-carrier communication using adaptive tone-pruning. The method may include transmitting a data-bearing signal over a plurality of tones on a communication loop within a plurality of communication loops and calculating a minimum tone cost according to a tone cost algorithm. The tone ... 01/05/06 - 20060002456 - Method and apparatus for managing modem sample rates on a digital audio interface within a direct access arrangement circuit An apparatus for managing modem sample rates within a direct access arrangement (DAA) circuit is disclosed. The DAA circuit includes a serial audio interface for providing communications between the DAA circuit and a host computer system. The serial audio interface is capable of operating under multiple serial communication interface standards, ... 12/29/05 - 20050286620 - Synchronous transmission in dsl communications systems A multiple port digital subscriber line (DSL) modem for effecting DSL communications over bonded twisted-pair wire facilities is disclosed. The frame boundaries of DSL frames communicated by the modem from its ports are synchronized in time during DSL initialization by controlling the frame at which cyclic affices are appended. The ... 12/29/05 - 20050286619 - Parallel dsp demodulation for wideband software-defined radios A demodulator, suitable for use in a communication system and in a modem, has a block polyphase circuit with circuit blocks for different signal processing functions, particularly filtering, delay, and frequency conversion. The circuit blocks are arranged for parallel processing of different portions of an input sequence of signals. Signals ... 12/22/05 - 20050281326 - Transceiver apparatus and method having ethernet-over-power and power-over-ethernet capability A transceiver device for coupling between a power line and a network interface unit includes a power line modem for transmitting and receiving data between the power line and the network interface unit and a power circuit coupled to the power line modem that is adapted to deliver a DC ... 12/08/05 - 20050271129 - Low latency signaling scheme for mode transition in dmt modems A method for coordinating and synchronizing a mode transition in a Discrete Multi-Tone (DMT) communication system operating over a range of tones. The method includes allocating a set of one or more of the tones in the range to serve as monitor tones for signaling the mode transition. The mode ... 12/08/05 - 20050271128 - Distributed scada system for remote monitoring and control of access points utilizing an intelligent uninterruptible power supply system for a wisp network An intelligent uninterruptible power supply (IUPS) for an access point (AP) within a wireless Internet service provider (WISP) network allows for the interaction with and integration of a supervisory control and data acquisition (SCADA) system. This results in an integrated wireless network management system allows for the control, monitoring and ... 11/24/05 - 20050259725 - Fext determination system Operational data is utilized to determine the FEXT interference induced by one line into the other DSL line. FEXT interference can be calculated using the NEXT interference measured between the two lines at the upstream ends of the loops and the downstream channel transfer function of one of the loops. ... 11/17/05 - 20050254562 - System and method to reduce noise estimation error during a digital subscriber line communication session and digital subscriber line modem incorporating the same A system for, and method of, reducing noise estimation error during a digital subscriber line (DSL) communication session and a DSL modem incorporating the system or the method. In one embodiment, the system includes: (1) a memory configured to contain data regarding frequency-dependent noise estimation error experienced during a prior ... 11/03/05 - 20050243904 - Method for detecting bridged taps on telephony cable In a particular embodiment a method of collecting and processing modem data is provided. The method includes,during training of a broadband modem, sending a series of tones within a frequency transmission band of the broadband modem, receiving the transmitted series of tones at a receiving broadband modem, receiving a measurement ... 10/27/05 - 20050238091 - Fast initialization using seamless rate adaptation A method for initializing modems in a multicarrier transmission system to establish a communication link between the transmitter and the receiver. An exemplary embodiment includes the steps of providing a predetermined parameter value that approximates a corresponding actual parameter value of the communication link, establishing a data communication link between ... 10/27/05 - 20050238090 - Modem for coupling a network-unit to a device Modems (1) for coupling network-units (40) to devices (50) and comprising receivers (21) for receiving first data from the network-units (40) and transmitters (22) for transmitting second data to the network-units (40), which first data is destined for the devices (50) and which second data originates from the devices (50), ... 10/27/05 - 20050238089 - Communication apparatus and communication method using digital wavelet multi carrier transmission system In case of disposing a pilot symbol in data transmission which depends on a DWMC transmission system, in a plurality of transmission symbols on a time axis, a pilot symbol, which becomes a signal of a sine wave, is configured, by giving contiguous identical data in a plurality of predetermined ... 10/27/05 - 20050238088 - Wireless communication system Embodiments of the present disclosure provide systems and methods for implementing a wireless communication system. Briefly described, in architecture, one embodiment of the system, among others, includes a receiving antenna that receives data signals from a base station. The wireless modem is positioned on the receiving antenna and receives data ... 10/13/05 - 20050226314 - Communication devices capable of using system clock inputs for embedded television applications According to one embodiment of the present invention, a device may receive one of multiple frequencies at a clock input of the device; determine which of the multiple frequencies is received; and generate at least one internal clock frequency for operation of the device using the received frequency. For example, ... 10/06/05 - 20050220180 - High speed access system over copper cable plant A system for transporting a high speed data stream over a plurality of relatively low bandwidth unshielded twisted copper pairs within the local loop plant or in any environment having a plurality of copper lines, such as on campuses, within large buildings, etc. The copper twisted pairs are transformed from ... 10/06/05 - 20050220179 - Iterative waterfiling with explicit bandwidth constraints The present invention provides an iterative method of allocating bandwidth in a twisted pair modem communication network in order to maximize communications speed while reducing NEXT interference. The method determines frequency bandwidths that cause NEXT interference and eliminates these harmful frequencies. In further embodiments, the invention adjusts other parameters of ... 09/29/05 - 20050213650 - Minimizing the differential delay in adsl2 and adsl2+ to support bonding A method of constructing a valid set of configuration parameters for ADSL2 and ADSL2+ compliant systems include selecting delays of a power of two ms, in which the ADSL2 or ADSL2+ compliant system may also possess a selected minimum noise protection value to produce maximum downstream and upstream net data ... 09/29/05 - 20050213649 - Underwater data communication and instrument release management system A data communications and underwater release management system for acquiring data from remote positively buoyant instrumentation packages moored underwater through the use of an intervening mechanical release coupled at one end to the buoyant instrumentation package and at the other to the mooring. A topside modem system provides bidirectional communication ... 09/29/05 - 20050213648 - Symmetric adsl communication A digital subscriber line (DSL) system including a central office (CO) switch (2) and a customer premises equipment (CPE) DSL modem (12), in which asymmetric DSL communications are implemented in a symmetric manner, is disclosed. Two twisted-wire pairs (10A, 10B) at the CPE are used to each carry ADSL traffic ... 09/29/05 - 20050213647 - Flexible power line modem The present invention is a universal power line modem for any type of power line communication network. The main idea of the invention is that the functions of different kinds of power line networks (different protocols and modulation/demodulation methods) will be realized by software based on one general, standard and ... 09/22/05 - 20050207483 - Discrete multi-tone (dmt) system and method that communicates a data pump data stream between a general purpose cpu and a dsp via a buffering scheme The apparatus and method herein splits the function of a digital subscriber line (DSL) modem data pump between a digital signal processor (DSP 106) and a general purpose host central processing unit (CPU 102). The DSP (106) handles all front end data pump processing such as interface to an analog ... 09/22/05 - 20050207482 - Dmt system with variable subchannel spacing in tcm isdn noise A device 8 is disclosed. The device 8 comprises a first component 10 operable to produce a plurality of discrete multitone symbols based in part on a subchannel spacing and a cyclic extension length and a second component 152 operable to determine the subchannel spacing and the cyclic extension length, ... 09/08/05 - 20050195892 - Training and updating for multiple input-output wireline communications The present invention provides a crosstalk mitigator for use in vectoring a digital subscriber line (DSL) system having initial crosstalk interference. In one embodiment, the crosstalk mitigator includes a crosstalk parameter estimation portion configured to determine crosstalk parameters associated with the initial crosstalk interference, and a mitigator initialization portion coupled ... 09/01/05 - 20050190827 - Modulation/demodulation apparatus for the encoding and decoding of data and method for encoding and decoding data A modulation/demodulation apparatus for the encoding and decoding of data, for example in a Bluetooth/WLAN/PHS multi-mode system based on software defined radio comprises an encoding system to encode data according to a plurality of modulation schemes and a decoding system to decode according to the plurality of modulation schemes the ... 09/01/05 - 20050190826 - Digital subscriber line modem with bitloading using channel condition model A telecommunication arrangement with modems (MCO; MCPE) having a receiving module (URx; DRx) able to receive channels of signals via a communication line (LN). The arrangement preferably operates according to the xDSL protocol. The receiving module of each modem is associated to storage means (USN, DSN; LDN) storing a “channel ... 09/01/05 - 20050190825 - Bit-loading in multicarrier communication systems in the presence of an asymmetric, correlated gaussian noise sources In general, various methods and apparatus are described that use a multi-tone receiver. The multi-tone receiver detects data in a multiple tone signal. The receiver has a detector module to measure a noise power level present in the system and to detect for an asymmetric Gaussian noise source in the ... 09/01/05 - 20050190824 - Method and apparatus for mounting a modem to a carrier assembly A method and apparatus are disclosed for connecting a modem to a motherboard in a computing device, such as a personal computer. The disclosed modem module comprises circuitry for interfacing with a telephone line; and one or more solder pads for connecting the modem module to a carrier assembly, such ... 08/25/05 - 20050185706 - Multimode multicarrier modem system and method of communication over the same An alternative approach to coping with the ever increasing demand for faster communications hardware is to design modems that are capable of operating its speeds at a higher data rate than a speed required for a single port of the standard communication rate for that modem. Basically, by utilizing a ... 08/25/05 - 20050185705 - Control method of xdsl modem and xdsl modem According to one embodiment of the invention, a control method of an xDSL modem to transmit/receive signals to/from an outer xDSL modem through an analog transmission line such as a telephone line is provided. A line quality of the analog transmission line is measured by training. A line profile is ... 08/11/05 - 20050175078 - Flexible initialization method for dsl communication systems A communication system 10 initialized using an iterative training portion is disclosed. The communication system 10 comprises a first transceiver 12 operable to communicate according to a digital subscriber line standard and a second transceiver 14 operable to communicate according to the digital subscriber line standard with the first transceiver ... 08/11/05 - 20050175077 - Home network system for adjusting data transmission rate according to window state executed in client and method thereof A home network system and a method of adjusting a data transmission rate in accordance with the state of a window executed in a client. The home network system performs a network matching between an external communication network and a home network. According to the system, the transmission rate of ... 08/04/05 - 20050169358 - Computationally and memory efficient tone ordering scheme An integrated circuit 18 is provided that includes a memory 32 and a memory modification component 33. The memory 32 maintains a bits count, a gain, and a tone order for each of a plurality of discrete multi-tone sub-channels. The memory modification component 33 operable to control an in-service modification ... 08/04/05 - 20050169357 - Reliable multicarrier communication in the presence of timing phase error A method, system and apparatus for reliable multicarrier communication in the presence of timing phase error is disclosed. Phase noise due to a sampling-time phase mismatch between a transmitter device and a receiver device is measured in a signal. A Gaussian noise power level in the signal is determined, and ... 07/14/05 - 20050152442 - Real-time formation of optimal power spectral density masks A technique for real-time formation of optimal power spectral density masks is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for real- time formation of optimal power spectral density masks. The method may comprise sensing line conditions in a communication medium, wherein the communication ... 07/14/05 - 20050152441 - Symbol timing recovery method for dmt-vdsl A symbol timing recovery method for DMT-VDSL is disclosed. The method converts the extracted sample to the frequency domain. Using the peaks and the company peaks in the frequency domain, the method determines the correct position of a peak response, thereby calibrating the sample extraction position. Thus, the symbol timing ... 07/07/05 - 20050147158 - Method and apparatus for automatic selection and operation of a subscriber line spectrum class technology The present invention provides a communication device, such as a modem, that is capable of detecting whether it is capable of operating in a mode that is compatible with one or more of the Spectrum Management Classes. The modem automatically selects a mode of operation that is compliant with one ... 06/30/05 - 20050141603 - Method and apparatus for signal transmission and reception A method and modem for communicating serial input data over a transmission link. Serial input data is partitioned into parallel data elements prior to rotation by an invertible linear mapping. Resulting frames of parallel signal elements sequentially modulate a carrier, which is then transmitted over the link. After receipt of ... 06/16/05 - 20050129103 - Activation of multiple xdsl modems with implicit channel probe A communication apparatus and method utilizing a Digital Subscriber Line (XDSL) modem that is selectively connected to a central communication apparatus to perform a full duplex communication. A communicator transmits a plurality of Mode Request (MR) signals to the central communication apparatus. The plurality of MR signals requesting that the ... 06/16/05 - 20050129102 - Cellular radio communication system cellular radio communication method and rake reception method A cellular radio communication system, a cellular radio communication method and a rake reception method for raising the efficiency of a baseband, and increasing the freedom of the structure of the radio base station. A cellular radio communication system comprises a baseband and first to Nth transmitter-receicvers connected by a ... 06/16/05 - 20050129101 - Sdma communications with non-immediate block acknowledgment In Spatial Division Multiple Access (SDMA) communications, mobile devices that are transmitting to a base station substantially simultaneously during a predetermined communications phase may wait until after an end of the predetermined communications phase to receive acknowledgments to their transmissions, so that a mobile device making a relatively short transmission ... 06/16/05 - 20050129100 - Architecture for per tone equalizer with reduced complexity for dmt-based xdsl modems In accordance with an embodiment of the present invention an improved equalization system for DMT based modem receiver is provided. It includes a time domain equalizer for processing samples from an analog front end and includes a device for computing differences of time domain samples for every frame and the ... 06/09/05 - 20050123030 - Systems and methods for loop length and bridged tap length determination of a transmission line Through the use of a least squares minimization concept, the loop length, the number of bridged taps and length of the bridged taps on a transmission line can be determined from readily available modem data. In particular, the loop length, the number of bridge taps and the length of bridged ... 06/09/05 - 20050123029 - Method and system for direct digital up-conversion in a cable modem Provided are a method and system for a module for a cable modem termination system. The module includes a digital modulator configured to block up-convert a plurality of digital channels and a digital to analog converter coupled, at least indirectly, to an output of the digital modulator to convert the ... 06/09/05 - 20050123028 - Adaptive margin and band control Controlling margins in a DSL modem pair is based on collected operational data. The operational data is analyzed and at least one of the modems in the modem pair is instructed to use a margin-related parameter value to assist the modem pair in meeting a margin target, such as a ... 06/09/05 - 20050123027 - Dsl system estimation and parameter recommendation Estimates of a communication system configuration, such as a DSL system, are based on operational data collected from a network element management system, protocol, users and/or the like. The operational data collected from the system can include performance-characterizing operational data that typically is available in an ADSL system via element-management-system ... ### FreshPatents.com Support |