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Pulse Or Digital Communications > Equalizers

Equalizers

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

08/21/14 - 20140233625 - Maximal ratio combining of equalized symbols for mimo systems with harq and/or repetition coding
Systems and methods are provided for decoding signal vectors in multiple-input multiple-output (MIMO) systems, where the receiver has received one or more signal vectors based on the same transmitted vector. The receiver linearizes each received signal vector using one or more zero-forcing, MMSE, or other suitable linear equalizers. The components...

07/24/14 - 20140204990 - Apparatus and system for switching equalization
Described herein is apparatus and system for switching equalization. The apparatus comprises a sampler to sample an input signal; and an attenuator, coupled to the sampler, with a hysteresis associated with the input signal, the hysteresis of the attenuator is configurable to cancel hysteresis of a communication channel coupled to...

06/19/14 - 20140169433 - Modulation and equalization in an orthonormal time-frequency shifting communications system
A method which includes receiving a first modulated signal from a first user device, the first modulated signal being generated based upon a time-frequency transformation of first user data. The method further includes receiving a second modulated signal from a second user device, the second modulated signal being generated based...

06/12/14 - 20140161169 - Joint papr reduction and rate adaptive ultrasonic ofdm physical layer for high data rate through-metal communications
A link adaptive orthogonal frequency-division multiplexed (OFDM) ultrasonic physical layer is provided that is capable of high data rate communication through metallic structures. The use of an adaptive OFDM subcarrier-based modulation technique mitigates the effects of severe frequency selective fading of the through-metal communication link and improves spectral efficiency by...

06/05/14 - 20140153630 - Rate-adaptive dynamic spectrum management
The system may include a plurality of communication connections. A number of transmitters may transmit a signal to a number of receivers, the respective transmitter is adapted to convey transmit signal power to more than one receiver in the number of receivers. A process may adapt the allocation of power...

05/22/14 - 20140140384 - Matching signal dynamic range for turbo equalization system
A method for reducing a number of bits for representing a value is disclosed. A first value represented with a first number of bits is transformed to a second value represented with a second number of bits, wherein the first number of bits is greater than the second number of...

05/15/14 - 20140133540 - Low-complexity, highly-spectrally-efficient communications
A system may comprise circuitry that includes a sequence estimation circuit and a non-linearity modeling circuit. The circuitry may be operable to receive a single-carrier signal that was generated by passage of symbols through a partial response filter and through a non-linear circuit. The circuitry may be operable to generate...

05/08/14 - 20140126621 - Communications receiver with channel identification using a-priori generated gain vectors and associated methods
A communications receiver includes an antenna, and a burst signal acquisition circuit coupled to the antenna to detect a burst signal received over a wireless communications channel. The burst signal has a burst structure that includes channel-corrupted known preamble bits, channel-corrupted known probe bits and channel-corrupted unknown data bits. A...

05/08/14 - 20140126622 - Transimpedance amplifier with equalization
In one embodiment, a method includes applying, by a transimpedance amplifier at a receiving end of a communication link, equalization to a signal carried by the communication link at the receiving end of the communication link....

05/01/14 - 20140119422 - Multi-stage equalizer
An equalizer includes a multi-layer printed circuit board, an equalizing module, a first ground via, and a second ground via. The equalizing module includes two inputs, first and second signal vias, first and second resistors, two outputs, first and second microstrip lines. The first microstrip line extends from a side...

04/03/14 - 20140092951 - Jitter tolerant receiver
An embodiment of the invention includes a receiver with reduced error terms and incoming jitter tracking that improves jitter tolerance. An embodiment provides these benefits based on a voltage integrator that recovers data and clock information from incoming signals without use of a PLL, PI, CDR, and the like. An...

03/27/14 - 20140086296 - Receiver with multi layer interference cancellation
A multi user receiver configured to receive a signal including multiple symbol streams assigned to various users is described. The multiple symbol streams include at least one first symbol stream assigned to a user of the multi user receiver and at least one second symbol stream assigned to another user,...

03/27/14 - 20140086297 - Transmission circuit for i/o interface and signal transmission method thereof
A transmission circuit including an equalizer circuit, a slicer circuit, a signal detection circuit, and a control circuit is provided. The equalizer circuit performs an equalizing operation on an input signal according to preset states to output an equalizing signal corresponding to each preset state. The slicer circuit performs a...

02/13/14 - 20140044159 - Ground referenced single-ended signaling
One embodiment of the present invention sets forth a mechanism for transmitting and receiving ground-referenced single-ended signals. A transmitter combines a direct current (DC) to DC converter including a flying capacitor with a 2:1 clocked multiplexer to drive a single-ended signaling line. The transmitter drives a pair of voltages that...

02/06/14 - 20140036982 - High bandwidth equalizer and limiting amplifier
Embodiments of the present disclosure enable bandwidth extension of receiver front-end circuits without the use of inductors. As a result, significantly smaller and cheaper receiver implementations are made possible. In an embodiment, bandwidth extension is achieved by virtue of very small floating capacitors that are coupled around amplifier stages of...

01/30/14 - 20140029658 - Analog/digital co-design methodology to achieve high linearity and low power dissipation in a radio frequency (rf) receiver
Receiver design techniques are provided that are capable of producing relatively efficient, linear radio frequency (RF) receivers. During a design process, components of an analog receiver chain and digital nonlinearity compensation techniques are considered together to achieve reduced power consumption in the receiver....

01/30/14 - 20140029659 - Processing data in a receiver circuit and receiver circuit
A method includes receiving a signal including first data precoded on the basis of a first codebook entry of a codebook, wherein the codebook includes at least one further codebook entry, averaging a set of matrices to obtain a mean matrix wherein each matrix of the set of matrices is...

01/23/14 - 20140023130 - Apparatus and method for selective single-carrier equalization
Embodiments of an apparatus and method for selective single-carrier (SC) equalization are provided. Multipath propagation in a communication channel often changes, and the severity of multipath propagation is often below worst case conditions supported by a SC communication device. When multipath propagation is less severe and below worst conditions, the...

01/09/14 - 20140010275 - Method for processing a data signal and receiver circuit
A method includes receiving a signal including a co-channel interference, channel equalizing the received signal and processing the channel equalized signal based on a first precoding vector such that the co-channel interference is mitigated....

01/02/14 - 20140003482 - Receiver circuit
A receiver circuit includes a first amplification unit, a second amplification unit, a first equalizing unit, and a second equalizing unit. The first amplification unit is configured to differentially amplify an input signal and a reference signal and generate a first intermediate output signal and a second intermediate output signal....

12/12/13 - 20130329775 - Receiving device, receiving method, and program
The present technique relates to a receiving device, a receiving method, and a program for realizing a prompt start of data demodulation. A receiving device of one aspect of the present technique includes: a detecting unit that detects a first preamble signal from a frame signal having a frame structure...

12/05/13 - 20130322510 - Signal line routing to reduce crosstalk effects
A signaling system is disclosed. The system includes a transmitter comprising an encoder to encode a data signal such that the encoded data signal has a balanced number of logical 1s and 0s. The system also includes a receiver having a decoder to decode the encoded data signal, and a...

11/14/13 - 20130301696 - Equalization of transmissions
Transmissions from mid-bus test equipment to a first device and from a second device to the mid-bus test equipment are equalized. Equalization instructions are passed from the first device through the mid-bus test equipment to the second device. The mid-bus test equipment changes the quality of transmissions sent to the...

10/31/13 - 20130287084 - Wide common-mode range receiver
A wide common-mode range receiver includes an input module, voltage level shift module, voltage level shift control module, and output module. The receiver can also include an equalizer. The receiver translates data originating from a circuit powered from an external voltage supply to a circuit powered by an internal voltage...

10/31/13 - 20130287085 - Push-pull source-series terminated transmitter apparatus and method
A transmitter, such as a voltage mode driver (VMD)-based push-pull source-series terminated (SST) transmitter, is provided that can consume less current as the amplitude of a voltage output is decreased. The transmitter includes a transmitter circuit having a first branch and a second branch. While the first branch is activated...

10/17/13 - 20130272363 - Equalizer for loss-compensation of high-frequency signals generated in transmission channels
An equalizer for compensating transmission losses of electronic communication signals includes a circuit board and a compensation module. The compensation module includes a pair of input pins, a pair of output pins, and at least two resistors. When a signal transmitted by the circuit board is received by the input...

09/19/13 - 20130243065 - Digital transmission and reception devices for transmitting and receiving streams, and processing methods thereof
A transmission system to transmit a transport stream (TS) having normal data and additional data, the transmission system including: a stream constructor to generate a TS, and a multiplexer (MUX) to insert information representing the characteristics of additional data in the TS. Therefore, it is possible for a reception system...

09/12/13 - 20130235920 - Systems and methods for data processing including pre-equalizer noise suppression
The present inventions are related to systems and methods for pre-equalizer noise suppression in a data processing system. As an example, a data processing system is discussed that includes: a sample averaging circuit, a selector circuit, an equalizer circuit, and a mark detector circuit. The sample averaging circuit is operable...

08/15/13 - 20130208777 - Transmission stream generating device for generating transmission stream which additional data is stuffed in a payload area of a packet, digital broadcast transmitting/receiving device for transmitting/receiving the transmission stream, and methods thereof
A transmission stream (TS) generating apparatus includes an adaptor which receives general data and generates a stream having a plurality of packets, and which provides adaptive field in some of the plurality of packets, and an inserter which inserts additional data into all the payload areas of some of the...

08/01/13 - 20130195165 - Ground referenced single-ended signaling
One embodiment of the present invention sets forth a mechanism for transmitting and receiving ground-referenced single-ended signals. A transmitter combines a direct current (DC) to DC converter including a flying capacitor with a 2:1 clocked multiplexer to drive a single-ended signaling line. The transmitter drives a pair of voltages that...

07/25/13 - 20130188679 - Communication system having data-dependent superimposed training mechanisim and communication method thereof
The present invention discloses a communication system with a data-dependent superimposed training mechanism and a communication method thereof. The system uses a precoding module installed in front of the data-dependent superimposed training mechanism to precode data by a precoding matrix. The precoding matrix is a N×N unitary matrix, which is...

07/11/13 - 20130177063 - Digital phase equalizer for serial link receiver and method thereof
An apparatus of automatic power control for burst mode laser transmitter and method are provided. In one implementation a method includes: pushing a first multi-bit data into a data memory; modifying the data memory to remove a condition of frequent transition in the data memory, if the condition of frequent...

07/04/13 - 20130170534 - Successive interference cancellation system and method for mimo horizontal encoding and decoding
A method and system for receiving and decoding horizontally encoded MIMO-OFDM transmissions with improved efficiency. In one embodiment, MIMO decoding is performed on each of the extracted separate tones of a MIMO-OFDM signal to extract and demodulate frequency domain symbols of the first layer corresponding to one or more code...

07/04/13 - 20130170535 - Receiver and receiving method for hierarchical modulation in single frequency networks
A receiver recovers local service data symbols from first Orthogonal Frequency Division Multiplexed (OFDM) symbols in the presence of second OFDM symbols. The second OFDM symbols carry national broadcast data symbols and modulated on to the sub-carriers of the second OFDM symbols using a first modulation scheme. The first OFDM...

06/20/13 - 20130156085 - Phased array device and calibration method therefor
The calibration method, performed on a phased array device including channel elements coupled in parallel by a transmission line, has the steps of: obtaining channel responses corresponding to the channel elements through the transmission line, and each of the channel responses is obtained when one of the channel elements is...

05/23/13 - 20130128942 - Advanced interference cancellation for precoded gsm edge radio access network (geran)
An interference cancellation receiver for a pre-coded orthogonal frequency division multiplexed (OFDM) based system combines temporal interference cancellation within the OFDM framework. Multi-path equalization and inter-symbol interference (ISI) cancellation are performed on a time domain channel estimate of a received signal. An output from the multi-path equalization is transformed to...

05/09/13 - 20130114661 - Wireless communication receiver with phase noise estimation and phase noise compensation performed after channel estimation, and related wireless communication receiving method and phase noise compensation apparatus
A wireless communication receiver includes a first signal processing block, a phase noise compensation apparatus, and a second signal processing block. The first signal processing block is arranged for generating a first processed output by processing a reception signal, wherein the first signal processing block includes a channel estimation unit...

05/02/13 - 20130107932 - Receiver and method for detecting a pre-coded signal
A multi-user MIMO receiver of a UE in question for detecting a pre-coded signal includes a unit configured to blindly estimate information concerning a pre-coding vector for a paired UE, which is operated on the same resource as the multi-user MIMO receiver, based on received data. Further, the multi-user MIMO...

04/11/13 - 20130089131 - Wireless transport framework with variable equalizer training
A system and method for wirelessly transmitting audiovisual information. Training information may be stored in a memory. A plurality of packets may be generated, including the training information. The plurality of packets may also include audiovisual information. The plurality of packets may include first information identifying a first training pattern...

04/04/13 - 20130083836 - Concatentation-assisted symbol-level combining for mimo systems with harq and/or repetition coding
Systems and methods are provided for decoding signal vectors in multiple-input multiple-output (MIMO) systems, where the receiver has received one or more signal vectors from the same transmitted vector. The receiver combines the received vectors by vector concatenation The concatenated vector may then be decoded using, for example, maximum-likelihood decoding....

03/21/13 - 20130070832 - Digital frequency divider
Various embodiments of the present invention relate to systems, devices and method of frequency synthesis that generate in-phase and quadrature-phase clock signals at a programmable frequency. The generated frequency, which can range from a fraction to multiples of the input reference frequency, is generated by dividers following a phase-locked loop,...

02/28/13 - 20130051449 - Wireless transmission system and method of wirelessly transmitting digital information
A wireless communication system is provided having a transmitter, having a modulation unit for performing a frequency shift keying modulation wherein an output of the modulation unit is bundled into data blocks. The communication system furthermore comprises a cyclic prefix adding unit for adding a cyclic prefix (CP) into each...

02/14/13 - 20130039405 - Communication system, transmission device, reception device, program, and processor
A coding scheme selection unit outputs bits of a signal in a past reception to a second coding unit and outputs bits of a retransmission signal to a third coding unit. The second coding unit decodes bits. The third coding unit codes bits with a different constraint length from a...

02/07/13 - 20130034142 - Symbol timing recovery circuit
Disclosed is a symbol timing recovery circuit which includes an interpolator to generate, using a first filter, interpolation data of an input signal; a forward equalizer to eliminate, using a second filter, a forward interference wave from the input signal based on the interpolation data, and to output the resultant...

01/10/13 - 20130010853 - Method and system for selective equalization enablement based on modulation type
Aspects of a method and system for selective equalization enablement based on modulation type are disclosed. One such method includes receiving a signal via an RF channel, detecting a modulation type of the signal, and selecting an equalization circuit for processing the signal based on the modulation type....

12/13/12 - 20120314750 - Apparatus and method for selective single-carrier equalization
Embodiments of an apparatus and method for selective SC equalization are provided. Multipath propagation in a communication channel often changes, and the severity of multipath propagation is often below worst case conditions supported by a SC communication device. When multipath propagation is less severe and below worst conditions, the use...

12/13/12 - 20120314751 - Channel estimation in a multi-user mimo-ofdm system in the presence of user terminal symbol-specific phase offsets
Disclosed is an OFDM wireless communication system comprising an access point, and a plurality of remote user terminals. The access point receives one or more training symbols transmitted by the user terminals, each training symbol comprising pilot symbols associated with phase offset estimation OFDM sub-carriers of said training symbol, the...

12/13/12 - 20120314752 - Multi-user detection using equalization and successive interference cancellation
A method and apparatus for multi-user detection is disclosed. A signal is received in a shared spectrum, and samples of the received signals are produced as a received vector. The received vector is segmented into vector segments. Each segment has a portion that overlaps with another segment and the overlapping...

12/13/12 - 20120314753 - Equalizer with controllably weighted parallel high pass and low pass filters and receiver including such an equalizer
An adjustable equalizer that includes a first branch including a low pass filter (LPF) typically having a variable gain (β), and a second branch including a high pass filter (HPF) typically having another variable gain (α). Outputs of the branches in response to an input signal are summed to produce...

11/22/12 - 20120294350 - Signal processing in wireless communication receivers
A method, receiver and program for equalising digital samples of a radio signal received over a wireless communications channel. The method comprises: receiving digital samples of the radio signal; calculating equaliser coefficients in the frequency domain; transforming the equaliser coefficients from the frequency domain to the time domain; and equalising...

11/08/12 - 20120281746 - Device and method for identification and cancellation of crosstalk
In order to allow cancellation of FEXT, where wire pairs of a bundle of transmission lines are non-reciprocally coupled, the device according to the present invention for cancellation for and identification of interfering signals in a communication system possess at least a cancellation circuit, which is connected downstream to dead...