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8787439 Decision feedforward equalization  
In described embodiments, a Decision Feed Forward Equalizer (DFFE) comprises a hybrid architecture combining features of a Feed Forward Equalizer (FFE) and a Decision Feedback Equalizer (DFE). An...
8782112 Methods and systems for optimal zero-forcing and MMSE frequency domain equalizers for complex and VSB signals  
An improved receiver apparatus and algorithm for equalizing signals in a receiver device may equalize a block of data generated from N data symbols in a single carrier communication system. A first...
8774261 Soft linear and non-linear interference cancellation  
A two stage interference cancellation (IC) process includes a linear IC stage that suppresses co-channel interference (CCI) and adjacent channel interference (ACI). The linear IC stage...
8737542 Method and apparatus for data reception in high-speed applications  
A method and apparatus for receiving data in high-speed applications wherein an analog-to-digital converter (ADC) samples a received signal and a data decoder implemented with a tree search...
8737461 Receiving equalization device in communication system and receiving equalization method  
Disclosed are a receiving equalization device and a method thereof, the receiving equalization device including a subtracter to output a first output signal, an eye monitor block to obtain a...
8724688 Compensation factor reduction in an unrolled decision feedback equalizer  
An unrolled decision feedback equalizer (DFE) as disclosed herein has a reduced number of compensation factors while keeping a suitable performance level for a given application. The KN possible...
8681850 Signal processing apparatus, signal processing method and program  
A signal processing apparatus includes a signal processing unit configured to carry out signal processing on a single-carrier signal and a multi-carrier signal by making use of a plurality of...
8675722 Methods and apparatus for snapshot-based equalization of a communications channel  
Equalization techniques for compensating distortion associated with a communications channel are provided. In one aspect of the invention, a method/apparatus for equalizing an input signal received...
8671128 Method and apparatus for a finite impulse response filter  
A finite impulse response filter (FIR) for processing a communication channel. The FIR comprises a delay line, a tap processor and a summer. The delay line has “N” taps to successive portions of ...
8661071 Systems and methods for partially conditioned noise predictive equalization  
Various embodiments of the present invention provide systems and methods for equalization. As an example, a circuit for data equalization is described that includes a 2N state detector circuit that...
8654831 Signal detection apparatus  
A signal detection apparatus detects the frequency of an input signal without using a PLL. The detection apparatus includes a first and a second orthogonalizer, a phase difference calculator and an...
8634455 Symmetric leakage for adaptive finite-impulse-response filters  
An adaptive finite-impulse-response filter includes a series of taps; each tap has a corresponding value of tap coefficient. Values of tap coefficients are calculated to minimize a system error...
8620984 Minimum mean square error processing  
A first systolic array receives an input set of time division multiplexed matrices from a plurality of channel matrices. In a first mode, the first systolic array performs triangularization on the...
8612502 Simplified equalization for correlated channels in OFDMA  
Systems and methodologies are described that facilitate equalization of received signals in a wireless communication environment. Multiple transmit and/or receive antennas and utilize MIMO...
8601043 Equalizer using infinitive impulse response filtering and associated method  
An equalizer for equalizing an input signal includes an infinitive impulse response (IIR) filtering portion for filtering the input signal to produce N filtered outputs; a gain-adjusting portion...
8599913 Data regeneration apparatus and method for PCI express  
A data regeneration device regenerates a digital signal in a low-speed pass-through mode of operation, performs an upstream link equalization procedure on an upstream data link in an equalization...
8595278 Method and system for unconstrained frequency domain adaptive filtering  
Aspects of a method and system for unconstrained frequency domain adaptive filtering include one or more circuits that are operable to select one or more time domain coefficients in a current...
8582636 High performance equalizer having reduced complexity  
An apparatus and method for implementing an equalizer which combines the benefits of a decision feedback equalizer (DFE) with a maximum-a-posterori (MAP) equalizer (or a maximum likelihood sequence...
8571095 Equalization filter and distortion compensating method  
An equalization filter is provided for solving the problem in which there is a limited range in which compensated for distortion of a transmission signal can be made. Measuring instrument 104...
8566379 Systems and methods for self tuning target adaptation  
Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit is disclosed that includes an equalizer circuit, a noise...
8548097 Coarse phase estimation for highly-spectrally-efficient communications  
Methods and systems are provided for coarse phase estimation for highly-spectrally efficient communications. An example method may include, equalizing, in a receiver, a received inter-symbol...
8548038 Pattern detector for serializer-deserializer adaptation  
In described embodiments, a Serializer-Deserializer (SerDes) receiver includes a pattern detector that allows for detection of insufficiently randomized pattern periods and low activity periods. A...
8509299 Decision feedback equalizer operable with multiple data rates  
Decision feedback equalization (DFE) circuitry and method for equalizing data signals over a wide range of data rates. By using delayed and controlled versions of the recovered data clock to retime...
8457190 Summer block for a decision feedback equalizer  
Embodiments of a summer block for a Decision Feedback Equalizer are provided herein. The summer block is configured to offset a combination of a Feed Forward Equalized (FFE) data signal and a...
RE44219 Adaptive receiving system and method for MIMO  
Disclosed is an adaptive receiving MIMO (multi input and multi output) system and method which decides a symbol detecting order so as to estimate the symbol having the minimum summation of weights...
8443034 Input vector selection for reducing current leakage in integrated circuits  
Techniques are generally described for selecting input vectors that reduce or minimize leakage current for a plurality of integrated circuits (ICs) with the same design, but that differ due to...
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...
8417752 Offset cancellation in equalizer circuitry  
An equalizer circuitry that includes an equalizer stage having a programmable current source is described. In one implementation, the programmable current source cancels voltage offset. Also, in...
8417754 Identification of integrated circuits  
Techniques are generally described for generating an identification number for an integrated circuit (IC). In some examples, methods for generating an identification of an IC may comprise selecting...
8392493 Noise canceling device, weighing device, method of canceling a noise, and method of designing a digital filter  
It is an object of the present invention to provide techniques which allow for easier change in filter characteristics of a digital filter. Then, in order to attain this object, in a weighing...
8380774 Coefficient memory for least mean square finite impulse response filter  
A read channel of a magnetic recording apparatus includes a filter that uses filter coefficients to process the data detected by a read head from the magnetic recordable media. The coefficients...
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...
8341202 Code division multiple access (CDMA) system for calculating coefficients of filter and method for filtering a received signal  
A method for calculating coefficients of a filter and a method for filtering are provided. The invention directly factorizes a specific function in a cepstrum domain by spectral factorization and...
8335440 Method, system, and apparatus for blind equalization of BPSK signals  
A system, method, and apparatus is disclosed for enabling a constant modulus algorithm (CMA) to be reliably used for blind equalization training of an equalizer. According to one embodiment,...
8320439 Methods and apparatus for adaptive link partner transmitter equalization  
Methods and apparatus are provided for adaptive link partner transmitter equalization. According to one aspect of the invention, a local transceiver adapts one or more equalization parameters of a...
8300684 Real-time eye monitor for statistical filter parameter calibration  
In described embodiments, filter parameters for a filter applied to a signal in, for example, a Serializer/De-serializer (SerDes) receiver and/or transmitter are generated based on real-time...
8295340 Minimum mean square error equaliser with reduced complexity  
The present invention relates to the field of communication devices, e.g. wireless communication devices. More particularly, the present invention relates to the field of signal equalization,...
8284828 Monitoring instability and resetting an equalizer  
Instability resulting from non-linear impairments is detected and an equalizer of an end device is reset. An equalization instability threshold is retrieved from a data storage device. An...
8275026 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) and having a variable gain (β), and a second branch including a high pass filter (HPF) and having another ...
8275028 Advanced television systems committee (ATSC) digital television (DTV) receiver  
A computer system may comprise a receiver to perform equalization. The receiver comprises an equalizer. The equalizer may determine locations of a principal tap, a platform noise tap, and a...
8259854 Channel estimation using common and dedicated pilots  
The present invention relates to a receiver apparatus and method of channel estimation in a telecommunication system which provides at least two pilot sequences, and to a computer program product....
8233523 Multidimensional asymmetric bang-bang control  
In one embodiment, a system includes one or more digital feedback equalizers (DFEs) that include one or more residual intersymbol interference (ISI) detectors, one or more column balancers, and one...
8223904 Multiple hypothesis decoding  
A multiple-input receiver for processing one or more communication signals is disclosed. The receiver includes a first and second demodulators, a decoder and decision logic. The first and second...
8213494 Sign-based general zero-forcing adaptive equalizer control  
In one embodiment, a system includes one or more digital feedback equalizers (DFEs) that include one or more residual intersymbol interference (ISI) detectors, one or more column balancers, and one...
8208529 Equalization apparatus and method of compensating distorted signal and data receiving apparatus  
Provided are an equalization apparatus and method of compensating a distorted received signal. The equalization apparatus includes: a filter unit removing inter-symbol interference (ISI) from a...
8204103 Scalable equalizer for multiple-in-multiple-out (MIMO) wireless transmission  
Systems and techniques relating to processing information received from a spatially diverse transmission. In some implementations, an apparatus includes an input configured to receive data that has...
8175201 Systems and methods for adaptive equalization in recording channels  
Various embodiments of the present invention provide systems and methods for performing adaptive equalization. For example, various embodiments of the present invention provide methods for adaptive...
8144759 Adaptive methods employing optimal convergence factors for processing complex signals and systems  
Complex adaptive methods for complex information processing employ optimal individual convergence factors for real and imaginary components of the weight vector. For wireless receivers operating on...
8131791 Decision feedback equalizer having parallel processing architecture  
An integrated circuit includes a decision feedback equalizer (DFE) including a first and second digital equalizer logic including circuitry to compensate first and second bits in a received stream...
8126045 System and method for latency reduction in speculative decision feedback equalizers  
A decision feedback equalizer (DFE) and method include summer circuits configured to add a dynamic feedback tap to a received input to provide a sum and to add a speculative static tap to the sum....