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| Number | Title | Issue Date |
| 8179955 | Low density parity check (LDPC) coding for a 32K mode interleaver in a digital video broadcasting (DVB) standard A data processing apparatus communicates data bits on a predetermined number of sub-carrier signals of an Orthogonal Frequency Division Multiplexed (OFDM) symbol. The data processing apparatus comprises a parity interleaver operable to perform parity interleaving on... | 05/15/2012 |
| 8179954 | Odd interleaving only of an odd-even interleaver when half or less data subcarriers are active in a digital video broadcasting (DVB) standard A data processing apparatus is arranged to map input data symbols to be communicated onto a predetermined number of sub-carrier signals of Orthogonal Frequency Division Multiplexed OFDM symbols. The predetermined number of sub-carrier signals is determined in accord... | 05/15/2012 |
| 8175142 | Odd-even interleaving while changing the operating mode in a digital video broadcasting (DVB) standard A data processing apparatus to map input data symbols to be communicated onto a predetermined number of sub-carrier signals of Orthogonal Frequency Division Multiplexed OFDM symbols. The predetermined number of sub-carrier signals is determined in accordance with on... | 05/08/2012 |
| 8170091 | 1K mode interleaver in a digital video broadcasting (DVB) standard A data processor maps input symbols to be communicated onto a predetermined number of sub-carrier signals of an Orthogonal Frequency Division Multiplexed (OFDM) symbol. The data processor includes an interleaver memory which reads-in the predetermined number of data... | 05/01/2012 |
| 8170090 | Data processing apparatus and method using a 32K mode interleaver in a digital video broadcasting (DVB) standard including the DVB-Terrestrial2 (DVB-T2) standard A data processing apparatus maps input symbols to be communicated onto a predetermined number of sub-carrier signals of an Orthogonal Frequency Division Multiplexed (OFDM) symbol. The data processor includes an interleaver memory which reads-in the predetermined num... | 05/01/2012 |
| 8170092 | Odd-even interleaving while changing the operating mode in a digital video broadcasting (DVB) standard A data processing apparatus to map input data symbols to be communicated onto sub-carrier signals of Orthogonal Frequency Division Multiplexed (OFDM) symbols. The number of sub-carrier signals available from each of the OFDM symbols being variable between OFDM symbo... | 05/01/2012 |
| 8155178 | 16k mode interleaver in a digital video broadcasting (DVB) standard A data processing apparatus maps input symbols to be communicated onto a predetermined number of sub-carrier signals of an Orthogonal Frequency Division Multiplexed (OFDM) symbol. The data processor includes an interleaver memory which reads-in the predetermined num... | 04/10/2012 |
| 8121183 | System for an adaptive floating tap decision feedback equalizer A method for adaptive selection of floating taps in a decision feedback equalizer including the steps of (A) determining values for a predefined metric for tap positions within a range covered by a decision feedback equalizer (DFE) and (B) setting one or more floati... | 02/21/2012 |
| 8111742 | Data processing method, equalizer, receiver, communication system, network element, and terminal using simplified channel matrix inversion The invention is related to a communication terminal, comprising: means (618) for creating at least one channel matrix assuming predetermined interfering signals as a part of a desired signal; means (618) for dividing the at least one channel matrix in... | 02/07/2012 |
| 8107520 | Wireless communication apparatus having equalizer Receiving a transmission line estimation sequence, a wireless communication apparatus generates a transmission line characteristic estimation value for each of a plurality of sub-carriers and smoothes the transmission line characteristic estimation value of a target... | 01/31/2012 |
| 8102906 | Fractional-rate decision feedback equalization useful in a data transmission system Decision feedback equalization (DFE) circuits are disclosed for use with fractional-rate clocks of lesser frequency than the data signal. For example, a one-half-rate clocked DFE circuit utilizes two input data paths, which are respectively activated on rising and f... | 01/24/2012 |
| 8073045 | Method and a system for generating an adaptive slicer threshold An adaptive slicer threshold is derived from averages of maximum and minimum values of the received signal, the method comprising the steps of: —averaging (86) several detected maximum values and averaging several detected minimum values, and —calculating... | 12/06/2011 |
| 8064511 | Equalization apparatus, equalization method and receiver using the same This invention relates to an equalization apparatus, an equalization method and a receiver using the same. Two equalizers are applied to the equalization apparatus to cover two clusters of a channel. The weights of the two equalizers are calculated by channel gains ... | 11/22/2011 |
| 8059706 | Method and system for transmission and/or reception of signals utilizing a delay circuit and DDFS Aspects of a method and system for transmission and/or reception of signals utilizing a delay circuit and a DDFS are provided. In this regard, a first signal may be delayed by 90°, via a plurality of delay elements and variable capacitance, to generate a second sig... | 11/15/2011 |
| 8009727 | Equalizer for single carrier FDMA receiver A method of equalizing a received signal compensates for frequency selectivity of the communication channel taking into account channel estimation errors. The method comprises generating channel estimates for the received signal, computing filter weights for an equa... | 08/30/2011 |
| 7889785 | Method, system and apparatus for quantifying the contribution of inter-symbol interference jitter on timing skew budget An apparatus, method and system are provided for quantifying communication channel intersymbol interference jitter effect contribution to timing skew. In general, lossy and lossless characteristics of the communication channel are preferably obtained and an output s... | 02/15/2011 |
| 7881364 | Method for generating a reference signal sequence using grouping Method for generating reference signal sequence using grouping is explained. In this method, base sequences are grouped such that each group contains at least one base sequence of each length, so UE(s) can use various length sequences as a reference signal. And in t... | 02/01/2011 |
| 7852914 | Fade equalizer Processing a received signal is disclosed. It is determined that a received signal does not satisfy a prescribed signal quality criterion. Based at least in part on the determination, an equalizer tap is not updated based on the received signal. ... | 12/14/2010 |
| 7835433 | Multiple receiving devices determining the sampling rate for received signals using a plurality of sampling rates A receiver apparatus is disclosed. The receiver apparatus includes a plurality of signal receiving devices and a plurality of channel signal outputting devices for sampling signals received by the signal receiving devices at sampling rates switched within a predeter... | 11/16/2010 |
| 7817712 | System and method for independently adjusting multiple compensations applied to a signal In one embodiment of the present invention, a method for adjusting a signal includes applying a plurality of compensation for distortion to a signal to generate an output signal. The method also includes, using a clock signal, sampling the output signal to generate ... | 10/19/2010 |
| 7804894 | System and method for the adjustment of compensation applied to a signal using filter patterns A method for adjusting a signal includes applying a compensation for distortion to a data signal to generate an output signal. The method also includes sampling the output signal to generate data values and an error value, each data value comprising either a high va... | 09/28/2010 |
| 7801209 | Variable tap length equalizers and related digital receivers, methods and computer program products Equalizers are provided including an N-tap feed forward filter, an M-tap feed backward filter, an L-tap filter, a control unit and an accumulator. The control unit is configured to connect the L-tap filter to the N-tap feed forward filter or the M-tap feed backward ... | 09/21/2010 |
| 7724815 | Method and apparatus for a programmably terminated receiver A method and apparatus for a receive equalizer of a gigabit transceiver that is reconfigurable to support multiple communication standards. Communication standards having variable common mode and coupling requirements are accommodated through the use of reconfigurab... | 05/25/2010 |
| 7609759 | Method and system of nonlinear signal processing A nonlinear equalizer for treating the nonlinear component of a distorted digital signal includes a first processing unit adapted to receive the distorted digital signal and yield an appropriate output signal in response thereto, a second processing unit adapted to ... | 10/27/2009 |
| 7443913 | High speed decision feedback equalizer An equalizer comprises a sampler, a filter, and a summer. The sampler samples a signal indicative of an input communication signal to determine digital decision output signals having a communication device data rate. The filter receives digital decision output signa... | 10/28/2008 |
| 7443914 | DFE to FFE equalization coefficient conversion process for DOCSIS 2.0 A method and appartus for converting FFE and FBE coefficients from a DOCSIS compatible cable modem termination system upstream equalizer into FFE only coefficients to be sent down to the cable modem which transmitted the training burst which resulted in convergence ... | 10/28/2008 |
| 7440035 | Cable extending device Attenuation compensation volume computing means (60, 61, 62, 63, 67, 68, 69, 70) of a signal receiver computes attenuation compensation volume of a video signal (GL, GH) on the basis of attenuation of pulses which are arranged in a digit... | 10/21/2008 |
| 7440520 | System and method for terrestrial high-definition television reception An adaptive receiver is disclosed for optimally receiving and processing signals. The receiver utilizes one or more memory blocks to store groups of incoming symbols. The groups of symbols are processed by a channel estimation subsystem to determine channel characte... | 10/21/2008 |
| 7433418 | Method and apparatus for efficient storage of training sequences for peak to average power constrained modulation formats Some embodiments store a training sequence in a communications system. The stored training sequence exhibits certain desirable characteristics when used by a peak to average power constrained modulation format. In one embodiment, a set of original ordered sequences ... | 10/07/2008 |
| 7424053 | Channel equalization in data receivers Channel equalization in a 1000BASE-T receiver is performed by a fixed mode analog filter 2 suitable for the longest possible cable length, by a FFE (3), and by a digital filter 4. The digital filter (4) has two sets of taps. One set is op... | 09/09/2008 |
| 7421022 | Method for robust and stable convergence of blind LMS based adaptation of coefficients for a continuous time FFE-DFE A continuous time electronic dispersion compensation architecture using feed forward equalization and a non-linear decision feedback equalization forms an output signal by a linear combination of successively delayed versions of the input signal and the sliced outpu... | 09/02/2008 |
| 7421021 | Adaptive signal equalizer with adaptive error timing and precursor/postcursor configuration control An adaptive signal equalizer with a feedforward filter in which the feedback error signal and corresponding incoming data signal are dynamically aligned in time using signal interpolation, and further, to control the precursor/postcursor filter taps configuration, t... | 09/02/2008 |
| 7415065 | Adaptive filtering in the presence of multipath Adaptively analyzing an observed signal to estimate that part of the signal that best corresponds to a steering vector. Modifying the steering vector by convolution of the steering vector with a vector estimating the effect of multipath on the observed signal. ... | 08/19/2008 |
| 7394849 | Decision feedback equalizer with dynamic feedback control A decision feedback equalizer with dynamic feedback control for use in an adaptive signal equalizer. Timing within the decision feedback loop is dynamically controlled to optimize recovery of the data signal by the output signal slicer. The dynamic timing is control... | 07/01/2008 |
| 7386053 | System and method of equalization of high speed signals In one aspect, the present invention is directed to a technique of, and system for enhancing the performance of high-speed digital communications through a communications channel, for example a backplane. In this aspect of the present invention, a transmitter includ... | 06/10/2008 |
| 7369608 | Dynamic regulation of power consumption of a high-speed communication system A method for dynamically regulating the power consumption of a high-speed integrated circuit which includes a multiplicity of processing blocks. A first metric and a second metric, which are respectively related to a first performance parameter and a second performa... | 05/06/2008 |
| 7366232 | Method and device for the automatic selection of the bit rate in high frequency transmissions A method and device for determining at least one traffic parameter in a data transmission system including at least one transmitter and one receiver, wherein the receiver includes a modem with equalizer. The method includes determining at least one piece of data giv... | 04/29/2008 |
| 7355544 | TAD A/D converter in which pulse delay circuit is initialized prior to each conversion operation for deriving an output digital value In a TAD (Time Analog-to-Digital) type of A/D converter in which delay units of a pulse delay circuit successively transfer a pulse signal during each of successive measurement intervals, with each delay unit applying an amount of delay determined by an analog input... | 04/08/2008 |
| 7356108 | OFDM receiver having adaptive channel estimator for correcting channel fading based on accumulated pseudo power values A channel estimator is configured for determining a gain adjustment for a received wireless signal having a prescribed plurality of tones. The channel estimator is configured for generating, for each of the tones, a corresponding pseudo power value representing a de... | 04/08/2008 |
| 7346105 | Decision feedback equalization with fractionally-spaced feedback data A decision feedback equalizer (DFE) architecture uses feedback samples that are over-sampled with respect to the symbol rate. On-baud feedback samples are quantized with a slicer, while off-baud samples are linear, IIR samples. Both forward and feedback filters are ... | 03/18/2008 |
