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| Number | Title | Issue Date |
| 8446940 | Adaptive receive-side equalization An adaptive receiver equalizes incoming data expressed as a series of symbols, the degree of equalization being adjusted by some adaptive control logic. An amplitude detector samples the amplitude of the eye openings of incoming symbols and conveys the resulting mea... | 05/21/2013 |
| 8442105 | Equalization for minimum mean-square-error successive-interference-cancellation In an embodiment of an equalizer, a demodulator for MMSE-SIC receives a symbol vector to provide first information. A decoder receives the first information to provide second information to the demodulator. The decoder iteratively processes the first information to ... | 05/14/2013 |
| 8442104 | Signal processing apparatus and signal processing method Provided is a signal processing apparatus including: an equalizer circuit that amplifies a predetermined frequency band of an input signal and outputs an output signal; a sampler circuit that samples the output signal amplified by the equalizer circuit with the outp... | 05/14/2013 |
| 8437387 | Asymmetric multi-channel adaptive equalizer An apparatus is disclosed to compensate for non-linear effects resulting from the transmitter, the receiver, and/or the communication channel in a communication system. A receiver of the communication system contains an image cancellation module that compensates for... | 05/07/2013 |
| 8437386 | Communication system A method for reducing ringing in a signal output from a filter comprising inputting a signal into a filter; filtering a first portion of the input signal to generate a filtered portion of the output signal; analyzing the filtered portion of the output signal; detect... | 05/07/2013 |
| 8432961 | Transmitting/receiving system and method of processing broadcast signal in transmitting/receiving system A transmitting system, a receiving system, and a method of processing broadcast signals are disclosed. The receiving system includes a tuner, a channel equalizer, a storage unit, an inner decoder, a deinterleaver, an outer decoder, and an interleaver. The tuner rece... | 04/30/2013 |
| 8432960 | Digital adaptive channel equalizer A channel equalizer that compensates for signal distortion of a signal in a communication channel includes an equalization filter, which gain-equalizes a received signal received through the communication channel, and an equalization control circuit, which generates... | 04/30/2013 |
| 8432959 | Method and apparatus for equalization using one or more qualifiers Methods and apparatus are provided for equalizing a received signal. A received signal is equalized by updating one or more equalization parameters; and discarding the updated equalization parameters if one or more predefined qualifier conditions are detected during... | 04/30/2013 |
| 8428113 | Equalizer for heavily clipped or compressed communications signals Apparatus and methods mitigate a problem of equalizing communications signals that have been distorted by severe non-linearities such as clipping or harsh compression. For example, severe non-linearity occurs when signal compression or signal clipping occurs at rate... | 04/23/2013 |
| 8428115 | Adaptive equalization system and method An adaptive equalization system includes an equalizer, a common-mode extraction buffer unit, a low-pass filter unit, a first and second energy compare units, a current comparator, and a digital control unit. The common-mode extraction buffer unit transmits a full sp... | 04/23/2013 |
| 8428111 | Crosstalk emission management Various embodiments are disclosed relating to crosstalk emission management. In an example embodiment, an amplitude of a main tap of a transmit equalizer may be determined to limit crosstalk emitted from a local channel to one or more other channels to be less than ... | 04/23/2013 |
| 8428112 | Parameter control circuit An interface circuit inputting and outputting data and a clock that have multiple speeds is provided with an equalizer capable of changing a circuit parameter, a frequency detection part detecting a clock frequency, and a parameter calculation control part calculati... | 04/23/2013 |
| 8428114 | Transmit equalizer compensation for probe receivers Transmit equalization over high speed digital communication paths may be compensated in a receiver for a probe on that path. In one example, a probe input provides a signal from an electronic communications path, the signal having been processed by a transmit equali... | 04/23/2013 |
| 8422544 | Communication receiver with an adaptive equalizer In a wireless communication system, a method for estimating a transmitted signal is disclosed. A wireless signal is received that includes a pilot channel and at least one other channel. A transmitted signal is estimated using an equalizer and the received wireless ... | 04/16/2013 |
| 8422545 | Adaptive equalizer and adaptive equalizing method An adaptive equalizer adapted to compensate a signal transmitted by a channel is provided. The adaptive equalizer includes a signal booster, an amplifier unit and an adaptive control loop. The signal booster receives the signal, adjusts gain for the signal, and outp... | 04/16/2013 |
| 8411733 | Signal equalizer for a signal transmission network In an RF signal transmission network such as the reverse channels of a coaxial cable network, there is provided at least one adaptive equalizer for pre- or post-filtering inter-symbol interference in the transmitted signals, the adaptive equalizer having a series of... | 04/02/2013 |
| 8411732 | Fast square root algorithm for MIMO equalization Systems and methodologies are described that facilitate equalization of received signals in a wireless communication environment. Using multiple transmit and/or receive antennas and MIMO technology, multiple data streams can be transmitted within a single tone. Duri... | 04/02/2013 |
| 8406284 | Receiver with adaptive equalizer Receivers and methods for receiving a signal may result in improved performance by resolving specific impairments at particular levels. For example, bit error ratio (BER) in the downstream signal of an HFC network may be improved by resolving up to 6% AM hum. Thus, ... | 03/26/2013 |
| 8396109 | Adaptive receive-side equalization An adaptive receiver equalizes incoming data expressed as a series of symbols, the degree of equalization being adjusted by some adaptive control logic. An amplitude detector samples the amplitude of the eye openings of incoming symbols and conveys the resulting mea... | 03/12/2013 |
| 8396105 | Data communication circuit with equalization control An adaptive equalizer comprises an adjustable equalizer circuit that allows to enhance the frequency dependence of contents of the transmitted signals which suffer from losses in the connected transmission channel. A blind equalization tuning procedure is proposed t... | 03/12/2013 |
| 8396106 | System and method for improving equalization in a high speed serdes environment A method and accompanying system are disclosed for tuning each channel of a high-speed SerDes link interface arranged in a configuration linking a local side to a remote side. The method includes transmitting a flow control packets from the local side to the remote ... | 03/12/2013 |
| 8396108 | Transmitting/receiving system and method of processing broadcast signal in transmitting/receiving system A receiving system and method of processing a broadcast signal is provided. The receiving system includes a signal receiving unit, a known sequence detector, a channel equalizer, a block decoder, and an error correction unit and receives a broadcast signal including... | 03/12/2013 |
| 8396107 | Generalized decision feedback equalizer precoder with receiver beamforming for matrix calculations in multi-user multiple-input multiple-output wireless transmission systems To realize a GDFE precoder for multi-user MIMO systems, which significantly reduces the computational cost while resulting in no capacity loss, one method comprises obtaining an effective downlink (DL) channel matrix H for the DL channel after receiver processing at... | 03/12/2013 |
| 8391349 | Equalizer with automatic gain control (AGC) A combination equalizer and automatic gain control (AGC) is provided for high-speed receivers. The combination circuit comprises a first AGC having an input to accept a communication signal and an input to accept a first control signal. The first AGC modifies the co... | 03/05/2013 |
| 8391348 | Apparatus and method for detecting interference wave An interference wave detecting apparatus includes a first Fourier transformer for frequency-converting a received signal; an extractor for extracting a known information signal from the frequency-converted received signal; an interpolator for performing interpolatio... | 03/05/2013 |
| 8385399 | Method for impulse noise mitigation A method of noise mitigation in a multi-carrier communication system includes receiving a signal from a decision device, determining whether synchronization symbol update is enabled, updating at least one of frequency-domain equalizer (FEQ) coefficients or digital e... | 02/26/2013 |
| 8385400 | Adaptive equalization in the presence of burst errors Methods for providing adaptive equalization in the presence of a burst error are provided. If an equalization algorithm has converged and burst errors are present during a symbol interval, the equalizer coefficients remain unchanged during the symbol interval. If th... | 02/26/2013 |
| 8385397 | Method for determining the step size for an LMS adaptive equalizer for 8VSB A method and system for determining a step size of an adaptive equalizer for a digital data receiver. The data received by the receiver includes coded symbols and uncoded symbols. The method includes determining a first error estimate based on decoded symbols corres... | 02/26/2013 |
| 8385398 | Receiver with chip-level equalisation The present invention relates to receiver apparatuses and methods of controlling weight adaptation in a receiver of a code multiplex telecommunications system with orthogonal spreading codes, wherein received discrete time signal samples are chip-level filtered by u... | 02/26/2013 |
| 8379709 | Channel estimation and equalization for hard-limited signals The present invention provides a method and apparatus for channel estimation when the amplitude of a received signal is hard-limited. A channel estimator computes amplitude estimates for the received signal based on the phase samples of the received signal and previ... | 02/19/2013 |
| 8379710 | Transmitter control in communication systems Techniques are described to adaptively adjust the equalizer settings of each transmitter in a transmitter-receiver pair. The transmitter-receiver pair can be used at least with implementations that comply with 40GBASE-CR4 or 100GBASE-CR10. For implementations that c... | 02/19/2013 |
| 8374232 | Equalizer adapting circuit A channel equalizer having a filter arranged to filter an input signal, the filter including a plurality of taps, each tap generating an output signal based on a coefficient, an input for receiving the coefficients and an output for outputting a filtered signal; and... | 02/12/2013 |
| 8363711 | Receive apparatus and method in a mobile communication system An apparatus and method for partially updating a tap coefficient and for reducing a hardware size are provided. The apparatus includes a channel estimator, an update period setting unit, and an adaptive algorithm processor. The channel estimator estimates a channel ... | 01/29/2013 |
| 8363710 | Tunable equalizer and methods for adjusting the tunable equalizer A tunable equalizer with a tunable equalizer frequency response is provided. The tunable equalizer includes an amplifier circuit for amplifying input signals and a tunable circuit coupled to the amplifier circuit. The tunable circuit is arranged to provide a zero po... | 01/29/2013 |
| 8358684 | Demodulation circuit, demodulation method, program, and reception apparatus A demodulation circuit including: a first error calculation section configured to calculate a first error in accordance with a blind method; a second error calculation section configured to calculate a second error in accordance with a DD method; an update section c... | 01/22/2013 |
| 8358683 | Channel equalizer A channel equalizer arranged to receive a data signal encoded by a plurality of amplitude levels, the circuitry including a filter having a plurality of taps, each tap generating an output signal based on a coefficient, an input for receiving an error signal for ada... | 01/22/2013 |
| 8355430 | Adaptive demodulation of a data communication An embodiment of the invention pertains to demodulating a data communication into a sequence of symbols. In this embodiment, a first filter generates a first convolution between a first plurality of coefficients and the data communication. The data communication is ... | 01/15/2013 |
| 8351495 | Method and apparatus for detecting in-band interference in a data communications modem A method and apparatus for detection and analysis of interference and noise in a received signal within a bandwidth of a predetermined communication channel. A receiver receives a modulated signal and generates a demodulated digital baseband signal. A digital quadra... | 01/08/2013 |
| 8351494 | Channel equalization and carrier recovery method and receiver in high speed wireless communication system Provided are a channel equalization and carrier recovery method and a receiving apparatus thereof. In the method, a receiver of the high speed wireless communication system obtains an initial value of a channel equalization coefficient through non-causal channel est... | 01/08/2013 |
| 8335249 | Receiver equalizer circuitry with offset voltage compensation for use on integrated circuits Equalizer circuitry on an integrated circuit (“IC”) includes first, second, and third continuous time, equalizer stages connected in series. Each stage includes peaking inductor circuitry. The equalizer circuitry may further include controllably variable, static... | 12/18/2012 |
