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Pulse Or Digital Communications > Transceivers

Transceivers

Transceivers patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

08/28/14 - 20140241405 - Transceiver and communication method of digital subscriber line
The present invention discloses a transceiver of digital subscriber line (DSL) which supports a variety of DSL systems, comprising: a transmission circuit for receiving an output signal and generating a first DSL transmission signal or a second DSL transmission signal according to the output signal under the control of a...

08/28/14 - 20140241406 - Wireless communications system performing transmission and reception according to operational states of co-located interface apparatus and related wireless communications method there of
A wireless communications system co-located with an interface apparatus includes a radio subsystem. The radio subsystem includes a transmission circuit arranged for performing a radio transmission, and a reception circuit arranged for performing a radio reception when the interface apparatus operates in a first operational state. The interface apparatus operates...

08/21/14 - 20140233612 - Technique for optimizing the phase of a data signal transmitted across a communication link
A first transceiver is configured to transmit a first data signal to a second transceiver across a communication link. The second transceiver maintains clock data recovery (CDR) lock with the first signal by adjusting a sampling clock configured to sample the first data signal. When the communication link reverses directions,...

08/21/14 - 20140233613 - Wifi management interface for microwave radio and reset to factory defaults
WIFI management interfaces for microwave radio and reset to factory defaults are provided herein. Methods may include transmitting or receiving, on a dedicated management interface antenna of the wireless radio management signals, signals in a dedicated band for controlling operations of the wireless radio, and transmitting or receiving, on at...

08/21/14 - 20140233614 - Isolation communication technology using coupled oscillators/antennas
The present subject matter discusses, among other things, electrical isolation, and more particularly wireless electrical isolation methods and apparatus. IN an example, an electrical isolator can include a transmit circuit including a transmit antenna, and a receive circuit including a receive antenna. The transmit circuit can be configured to receive...

08/21/14 - 20140233615 - Packet detector
There are several exemplary ways to more efficiently communicate an out-of-domain seed to a receiver—in a first technique, the seed can be indicated in the header portion or data portion of a packet. For example, the header portion of the packet could contain one or more bit fields that indicate...

08/14/14 - 20140226701 - Re-configurable receiver architecture for cable transmission
A configurable transceiver and method of operation are disclosed that may dynamically switch between a direct-conversion mode and a direct-sampling mode based, at least in part, upon a frequency component of a receive and/or transmit signal. When in the direct-conversion mode, the transceiver may operate as a direct-conversion transceiver, and...

08/14/14 - 20140226702 - 4tx codebook enhancement in lte
Channel state information (CSI) feedback in a wireless communication system is disclosed. A precoding matrix is generated for multi-antenna transmission based on precoding matrix indicator (PMI) feedback, wherein the PMI indicates a choice of precoding matrix derived from a matrix multiplication of two matrices from a first codebook and a...

08/14/14 - 20140226703 - Method and apparatus for recursively computing equalizer parameters for multiple-input multiple-output (mimo) wireless communication channels
A wireless receiver includes an input module, a channel module, an equalizer module, and a decoder module. The input module receives a message over a wireless communication channel. The message includes a plurality of training fields and first data. The first data includes user data perturbed by the channel. The...

08/14/14 - 20140226704 - System and method for data scrambling to reduce the crest factor in an ofdm waveform
A method is provided for reducing the peak power level in a combination of orthogonal frequency division multiplexed (OFDM) tones. The method is particularly effective when the information to be communicated is digital data consisting of long patterns of “1”s or “0”s. The digital data of the message is combined...

08/07/14 - 20140219323 - Bus communication transceiver
A bus communication transceiver measures a delay time in response to a rising time of a signal and adjusts a falling waveform of the same signal based on the measurement result. A signal waveform, especially, a duty ratio can be adjusted in a predetermined standard range. Also, the bus communication...

07/31/14 - 20140211831 - Communication devices and methods for signal detection
A communication device is described comprising a receiver configured to receive a receive symbol vector resulting from a transmission of a transmit symbol vector from at least one transmitter to the receiver wherein the transmit symbol vector comprises a plurality of transmit symbols wherein each transmit symbol is associated with...

07/31/14 - 20140211832 - Base-t common mode testing in an ethernet subsystem
Systems and methods are provided for common mode testing for a system using an Ethernet subsystem. The Ethernet subsystem generates test signals that can be introduced at various points in the system to detect the effect of noise introduced by various elements of the system. By introducing test signals at...

07/31/14 - 20140211833 - Channel estimation using averaging and interpolation
A method of performing channel estimation includes receiving a frame that includes, for each subcarrier of a subset of subcarriers in the frame, a pair of pilot symbols in the subcarrier. The subcarriers of the subset are regularly spaced apart from one another in the frequency domain. Time-averaged channel estimates...

07/31/14 - 20140211834 - Low-power, high-speed transceiver
The present invention relates to a low-power and high-speed transmission and reception apparatus which reduces consumption power of a sending-end circuit by increasing a value of a termination resistor included in a sending-end circuit and a receiving-end circuit so that the value is greater than a characteristic impedance value of...

07/31/14 - 20140211835 - Signaling of sequence generator initialization parameters for uplink reference signal generation
A base station initializes pseudo-random sequence generators on which wireless devices base generation of uplink reference signals. The base station determines a first sequence from a first subset of possible initialization sequences for a sequence generator of a first device, and determines a second sequence from a second subset of...

07/24/14 - 20140204984 - Apparatus for calculating weights associated with a received signal and applying the weights to transmit data
An apparatus for modulating transmit data and adding a cyclic prefix to the transmit data is provided. The apparatus comprises: transceiver hardware that is capable of receiving receive data utilizing multiple input channels and includes at least one first wireless element that is orthogonal frequency division multiplexing-capable, and at least...

07/24/14 - 20140204985 - Digital transceiver with switched capacitor sampling mixers and switched capacitor amplifiers
Examples of a digital transceiver, a switched-capacitor sampling mixer, and an N-stage switched-capacitor amplifier are generally described herein. The digital transceiver may include a plurality of switched-capacitor sampling mixers and a plurality of N-stage switched-capacitor amplifiers. Each mixer samples a received differential RF signal. The pair of N-stage switched-capacitor amplifiers...

07/24/14 - 20140204986 - Apparatus and method for correcting iq imbalance
a detection unit for detecting IQ mismatch in an IQ signal; an analog calibration module comprising a first analog calibration mechanism for calibrating IQ mismatch in the phase component and a second analog calibration mechanism for calibrating IQ mismatch in the amplitude component; and a control unit for determining a...

07/17/14 - 20140198831 - Radio frequency signal transceiving and processing method, device, and base station system
A radio frequency signal transceiver includes: a transmission circuit configured to perform power amplification on an input first analog signal, wirelessly transmit the first analog signal after power amplification, and output the first analog signal after power amplification to a pre-distortion circuit; the pre-distortion circuit configured to convert the first...

07/10/14 - 20140192844 - Fully integrated dc offset compensation servo feedback loop
The fully integrated DC offset compensation servo feedback loop is an integrator that measures the output signal DC component, and then feeds back and subtracts the measured DC component from the input signal. A larger integrator time constant lowers the high pass corner frequency, which must be very small in...

07/10/14 - 20140192845 - Method and apparatus for an adaptive multi-antenna system
A method is used for reconfiguring an electronic device, having at least three antenna elements, between different antenna modes. The method includes configuring, by a controller, the electronic device into a first antenna mode, wherein at least two of the antenna elements are coupled together to operate as a single...

07/10/14 - 20140192846 - Rate adaptation for data communication
In some embodiments, a method includes receiving, at a receiver of a first device via a channel of a communication medium, multiple data transmissions. Each data transmission of the multiple data transmissions has a guard interval of multiple guard intervals, wherein the multiple guard intervals have different lengths. The method...

07/10/14 - 20140192847 - Rate adaptation for data communication
In some embodiments, a method includes receiving, at a first device via a channel of a communication medium, multiple data transmissions, wherein a code rate of multiple code rates is associated with each data transmission of the multiple data transmissions. The method includes determining, based on signal characteristics of the...

07/10/14 - 20140192848 - Sending information at a band edge within an orthogonal frequency-division multiplexing (ofdm) symbol
Technology is discussed for increasing the spectral efficiency of an Orthogonal Frequency-Division Multiplexing (OFDM) symbol. Spectral efficiency can be increased by adding information to a band edge of the OFDM symbol in connection with measures taken to reduce OOB spectral leakage from the OFDM symbol. Spectral leakage reduction measures can...

07/10/14 - 20140192849 - System, a device and a method for adjusting output power in a distributed amplifier system
A system comprises a first device and a second device. The first device comprises a receiver, a spectrum analyzer, a controller, an amplifier, a filter and a transmitter. The first device receives from at least one antenna a plurality of signals from different sources. The spectrum analyzer is coupled to...

07/10/14 - 20140192850 - Method and apparatus for eliminating the effects of frequency offsets in a digital communication system
The present invention aims at eliminating the effects of frequency offsets between two transceivers by adjusting frequencies used during transmission. In this invention, methods for correcting the carrier frequency and the sampling frequency during transmission are provided, including both digital and analog implementations of such methods. The receiver determines the...

07/03/14 - 20140185656 - Techniques to accommodate different classes of devices in a wireless network
An apparatus, a method and a machine-readable storage medium to accommodate both high function and low cost wireless devices in a wireless network. An exemplary apparatus includes a receiver to wirelessly receive a first packet comprising first and second shifting pilot signals amidst first data symbols transmitted via multiple subcarriers...

06/26/14 - 20140177683 - Method and apparatus for antenna array channel feedback
A method and apparatus provide antenna array channel feedback. The method can include receiving, at a wireless terminal, a set of channel state information reference signals. The method can include determining, by the wireless terminal, based on the received set of channel state information reference signals, a precoding matrix that...

06/26/14 - 20140177684 - Rapid acknowledgement of radio transmissions for energy minimization
The disclosure relates to a transmission scheme for nodes in a network. More specifically, the disclosure relates to an acknowledgment scheme that minimizes energy requirements for an acknowledgment of a transmission between nodes. The disclosure describes that an energy constrained node may transmit to other nodes in a network and...

06/26/14 - 20140177685 - Broadband re-configurable rf receiver
An RF receiver system operating on a broader frequency range and wide input dynamic power range is described. Received RF signal is downconverted to baseband signal using multiple quadrature demodulators. A microcontroller system controls the RF receiver by selecting frequency range to be produced by the frequency synthesizer, selecting appropriate...

06/26/14 - 20140177686 - Method and apparatus for adjusting the timing of radio antenna tuning
A system that incorporates teachings of the present disclosure may include, for example, determining, by a controller of a mobile communication device, a phase shift criteria and an amplitude shift criteria associated with a modulation being implemented by the mobile communication device. The controller can determine a group of tuning...

06/26/14 - 20140177687 - Modulation method and apparatus with consideration of adaptive hybrid automatic repeat request in wireless communication system
A modulation method and an apparatus with consideration of adaptive Hybrid Automatic Repeat reQuest (HARQ) in a wireless communication system are provided. The method of a transmission end supporting a hybrid modulation technique in which different types of modulation schemes are mixed, information of a channel state with a reception...

06/19/14 - 20140169415 - Precoder weight selection for mimo communications when multiplicative noise limited
The method and apparatus disclosed herein improve throughput conditions limited by multiplicative noise by determining precoder weights for each data stream communicated between a MIMO transmitter node and a MIMO receiver node. The precoder weights are determined based on information derived from non-precoded reference symbols to decrease the energy allocated...

06/19/14 - 20140169416 - System and method for data serialization and inter symbol interference reduction
A system and method is disclosed for reducing inter symbol interference in a high speed data transfer system. One or more decision logic circuits and one or more pull circuits are used to enable the signal level of a bit in a serial bit stream to achieve its nominal value....

06/19/14 - 20140169417 - Automatic gain control unit for a low power receiver or transceiver
The automatic gain control unit for a radiofrequency receiver includes a first current source for charging a storage capacitor by a first current, four comparators for comparing on the lower side an in-phase positive intermediate signal, an in-phase negative intermediate signal, a quarter-phase positive intermediate signal, a quarter-phase intermediate signal...

06/19/14 - 20140169418 - Receiver and transmitter apparatus for carrier aggregation
An RF receiver/transmitter apparatus for carrier aggregation is disclosed, to provide a routing circuitry formed by a plurality of mixer modules for achieving both the function of carrier aggregation and the mixing frequency process of signals. This architecture allows sharing an RF front-end, improving degree of integration, and reducing hardware...

06/19/14 - 20140169419 - Transceiver and communication apparatus transmitting and receiving data encoded by transmission code
A transceiver that transmits and receives data used in a communication system, in which the data is encoded by a transmission line code and a signal level of the transmission code changes at a predetermined transition timing in a bit-duration. The transceiver includes: a clock generator that generates an internal...

06/19/14 - 20140169420 - Wireless communication apparatus
Processing data presented in the form of a vector representation involves representing direction of the vector with incremental accuracy by using a set of vector codebooks of decreasing dimensions per accuracy increment....

06/19/14 - 20140169421 - Wireless communication apparatus
Processing data presented in the form of a vector representation involves representing direction of the vector with incremental accuracy by using a set of vector codebooks of decreasing dimensions per accuracy increment....

06/19/14 - 20140169422 - High frequency front end module
A high frequency front end module includes a variable circulator, a transmission side filter, and a reception side filter. Capacitors that are to be selectively connected by a switch are provided between an antenna side port and a transmission side port of a circulator of the variable circulator. Capacitors that...

06/19/14 - 20140169423 - Sensor that transmits signals responsive to a request signal and receives information
A sensor comprises a transmitter to transmit signals over a communication path, the sensor further capable to receive signals from the communication path, wherein the sensor is configured to communicate sensor data having a nibble data signal format at the transmitter in response to a trigger signal received at the...

06/12/14 - 20140161159 - Method and apparatus for the cancellation of intermodulation and harmonic distortion in a baseband receiver
A method (600) and apparatus (200) cancel odd-order distortion signals. Desensitization can be determined (610) in a received signal caused by odd-order harmonic distortion occurring from at least one transmit signal. A baseband replica harmonic distortion signal can be generated (620) using the transmit signal. The baseband replica harmonic distortion...

06/12/14 - 20140161160 - Integrated transmit/receive switch
An apparatus comprises a transmit network to transmit an input from a first amplifier to an antenna, a receive network to provide an input from an antenna to a second amplifier, a first switch to selectively decouple the transmit network from the antenna, and a second switch to selectively decouple...

06/05/14 - 20140153616 - Sliding if transceiver architecture
Techniques for providing a transceiver with a sliding intermediate frequency (IF). In an aspect, a PLL generates a single local oscillator (LO) signal used for both up-conversion by a transmit (TX) signal path and down-conversion by a receive (RX) signal path, wherein the LO frequency is chosen as the TX...

06/05/14 - 20140153617 - Communications device and related method that detects radio frequency (rf) interferer on a communications channel
A communications device includes a demodulator configured to demodulate a received communications signal into complex time domain samples. A processor is coupled to the demodulator and configured to determine the variance over time domain magnitude samples, perform a complex Fast Fourier Transform (cFFT) on the complex time domain samples as...

06/05/14 - 20140153618 - Fast lo leakage calibration of direct up-conversion transmitters using three measurements
A direct conversion transmitter has a mixer stage to up-convert an input signal to the frequency of a local oscillator (LO). A DC offset circuit is coupled to an input signal port to apply a set of DC offset signal values. A processor determines a set of optimal DC offset...

06/05/14 - 20140153619 - Repartitioned transceiver using silicon-on-insulator
A transceiver circuit including a digital-to-analog converter, a filter coupled to the digital-to-analog converter, a passive mixer coupled to the filter, via a buffer and a multi-stage power amplifier coupled to the passive mixer via a passive amplifier. A transmitter and method for amplifying a RF signal for transmission are...

06/05/14 - 20140153620 - Use of multi-level modulation signaling for short reach data communications
A short reach communication system includes a plurality of communication SERDES that communicate data over a short reach channel medium such as a backplane connection (e.g., PCB trace) between, for example, chips located on a common PCB. A multi-level modulated data signal is generated to transmit/receive data over the short...

05/29/14 - 20140146860 - Transceiver with short-circuit detection and protection
A USB transceiver has transmitter circuitry, receiver circuitry, short-circuit detection circuitry, and short-circuit protection circuitry. The transmitter circuitry transmits a differential pair of outgoing data signals to a cable connected to the transceiver, and the receiver circuitry receives the differential pair of outgoing data signals via bi-directional input-output pins. The...

05/29/14 - 20140146861 - Serial digital interface between an rf transceiver and a baseband chip
One embodiment of the present invention provides a device for interfacing between a baseband controller and an RF integrated circuit (IC) chip having a modulator and a demodulator. The device includes an analog-to-digital converter (ADC) coupled to the demodulator located on the RF IC chip. The ADC is configured to...