Match Document Document Title
US20140056389 ORTHOTOPE SPHERE DECODING METHOD AND APPARATUS FOR SIGNAL RECONSTRUCTION IN THE MULTI-INPUT MULTI-OUTPUT ANTENNA SYSTEM  
The present disclosure provides an orthotope sphere decoding method of a multiple antenna system. The method includes: tree mapping a node having highest pruning potential that can be predicted at...
US20110311003 SOURCE-CHANNEL APPROACH TO CHANNEL CODING WITH SIDE INFORMATION  
Code designs for channel coding with side information (CCSI) based on combined source-channel coding are disclosed. These code designs combine trellis-coded quantization (TCQ) with irregular...
US20150155971 SYSTEM AND METHOD FOR ACCELERATING A MAXIMUM LIKELIHOOD DECODER IN A MIMO SYSTEM  
A decoder to search a tree graph to decode a received signal y. The tree graph may have a plurality of levels, each level having a plurality of nodes and each node representing a different value...
US20100329395 METHOD AND APPARATUS FOR SYMBOL DECODING USING TREE PRUNING BASED SPHERE SEARCH  
An apparatus and method for symbol decoding comprising selecting a degree of freedom (DOF) parameter for a noise vector; selecting a delta probability value; computing a cost function for a...
US20120134451 Method and System for a Low-Complexity Soft-Output MIMO Detection  
An approach for Soft-output K-Best MIMO detection comprises computing an estimated symbol vector and Log-Likelihood Ratio (LLR) values for transmitted bits. The approach includes a relevant...
US20110044398 Hard iterative decoder for multilevel codes  
Two decoding algorithms are introduced for the decoding of multi-level coded modulation and other types of coded modulation involving component codes and interleaving operations. An improved hard...
US20110044399 List-viterbi hard iterative decoder for multilevel codes  
Two decoding algorithms are introduced for the decoding of multi-level coded modulation and other types of coded modulation involving component codes and interleaving operations. An improved hard...
US20140079162 METHODS FOR ASSIGNING CODEWOODS TO POINTS IN HEXAGONAL CONSTELLATIONS IN DIGITAL COMMUNICATION SYSTEMS  
Embodiments of the invention provide a method of decoding of hexagonal constellations. The decoding methods exploit the inherent structure of the hexagonal grid to eliminate/minimize the...
US20150222457 SYSTEM AND METHOD FOR TREE-SEARCH ENHANCEMENT BY METRIC PREDICTION BASED ON INCOMPLETE PATHS IN SOFT OUTPUT MIMO DECODER  
A method and system for soft output multiple-input-multiple-output (MIMO) decoding may include generating a tree-graph based on: MIMO rank, number of bits per layer, and type of modulation,...
US20140254728 METHOD FOR GRAY CODING A SYMBOL ALPHABET  
A method for Gray coding a symbol alphabet transmitted utilizing a plurality of non-periodic waveforms. The method for Gray coding a symbol alphabet transmitted utilizing a plurality of...
US20120250804 Efficient Square-Root Free 2 Symbol Max-Log Receiver  
The present invention employs a look up table based implementation for the metric computations which eliminate redundancy and substantially reduce the number of multiplications. Moreover,...
US20110228883 COMBINING DECISION METRICS FOR DECODING BASED ON PAYLOAD DIFFERENCE  
Decision metrics used to decode wireless communication payloads are combined for successive frames to improve decoding of the later received frames. A bitwise payload difference between successive...
US20140376668 Vector Signaling with Reduced Receiver Complexity  
Methods and apparatuses are described to determine subsets of vector signaling codes capable of detection by smaller sets of comparators than required to detect the full code. The resulting lower...
US20130266097 Early Termination Schemes for Turbo Decoding in a Wireless Communication System  
Certain embodiments provide methods that may allow for improvements in performance and power consumption by terminating the turbo decoding process early when one of at least two test criterion is...
US20120106684 METHOD AND ARRANGEMENT FOR SOFT-DECISION SPHERE DECODING  
A method is provided for soft-decision sphere decoding for softbit computation which can be applied to all sphere decoding algorithms, in particular sphere decoding algorithms in any MIMO OFDM...
US20130329837 ADAPTIVE REFERENCE SYMBOL METHOD AND APPARATUS FOR A RECEIVER  
A method uses a set of reference symbols. The method includes receiving a first symbol, comparing the first symbol to the set of reference symbols, and selecting a reference symbol from the set of...
US20110311002 Turbo-Equalization Methods For Iterative Decoders  
Certain embodiments of the present invention are improved turbo-equalization methods for decoding encoded codewords. In one embodiment, in global decoding iteration i, the magnitude values of all...
US20140056391 ORTHOTOPE SPHERE DECODING METHOD AND APPARATUS FOR SIGNAL RECONSTRUCTION IN MULTI-INPUT MULTI-OUTPUT ANTENNA SYSTEM  
An orthotope sphere decoding method of a multiple antenna system is disclosed. The method includes performing tree search using a depth-first method by performing an OC-test on the nodes on which...
US20120033767 SELECTIVE QUANTIZATION OF DECISION METRICS IN WIRELESS COMMUNICATION  
A method for quantizing decision metrics (e.g., log likelihood ratios (LLRs)) for reduction of memory requirements in wireless communication is described. The method includes selecting a...
US20120014483 LOW COMPLEXITY OPTIMAL SOFT MIMO RECEIVER  
A low-complexity optimal soft MIMO detector is provided for a general spatial multiplexing (SM) systems with two transmit and NR receive antennas. The computational complexity of the proposed...
US20110051859 SYMBOL ESTIMATION METHODS AND APPARATUSES  
A novel symbol estimation method produces intersymbol interference free symbols by detecting interfering symbols in an interfering channel. A channel estimate is refined for additional...
US20120257692 RECEIVER SYSTEM AND METHOD OF OPERATION THEREOF  
A method of operation of a communication system includes: utilizing an estimation module estimating a log-likelihood ratio for a transmission; and utilizing a slicing module, coupled to the...
US20120063533 Encoding and decoding using constrained interleaving  
Serially-concatenated codes are formed in accordance with the present invention using a constrained interleaver. The constrained interleaver cause the minimum distance of the serial concatenated...
US20110299629 METHODS AND APPARATUS EMPLOYING FEC CODES WITH PERMANENT INACTIVATION OF SYMBOLS FOR ENCODING AND DECODING PROCESSES  
Encoding of a plurality of encoded symbols is provided wherein an encoded symbol is generated from a combination of a first symbol generated from a first set of intermediate symbols and a second...
US20110164707 UTILIZATION OF A KNOWN PORTION OF A PAYLOAD TO DECODE A PAYLOAD HAVING A KNOWN AND AN UNKNOWN PORTION  
A method, an apparatus, and a computer program product for wireless communication are provided in which a payload is received, the payload having a known portion and an unknown portion. The...
US20110019781 DEVICE AND METHOD FOR CALCULATING BACKWARD STATE METRICS OF A TRELLIS  
A method for calculating backward state metrics of a trellis, the method includes: performing a radix-K calculation of backward state matrices of multiple states of at least one time instance of a...
US20110243281 PIPELINED DECISION-FEEDBACK UNIT IN A REDUCED-STATE VITERBI DETECTOR WITH LOCAL FEEDBACK  
A pipelined decision feedback unit (DFU) is disclosed for use in reduced-state Viterbi detectors with local feedback. The disclosed pipelined decision feedback unit improves the maximum data rate...
US20150049846 DECODING APPARATUS AND DECODING METHOD  
A decoding apparatus including an operation unit to calculate a branch metric between first and second instants of time based on receiving likelihood data and an anterior likelihood, and to use,...
US20150155973 Efficient Demapping of Constellations  
Methods and apparatus for efficient demapping of constellations are described. In an embodiment, these methods may be implemented within a digital communications receiver, such as a Digital...
US20130329838 EFFICIENT DEMAPPING OF CONSTELLATIONS  
Methods and apparatus for efficient demapping of constellations are described. In an embodiment, these methods may be implemented within a digital communications receiver, such as a Digital...
US20130039447 SYMBOL VECTOR-LEVEL COMBINING RECEIVER FOR INCREMENTAL REDUNDANCY HARQ WITH MIMO  
Techniques are provided for transmitting and receiving a mother code in an incremental redundancy hybrid automatic repeat-request protocol. Each bit position of the mother code may be mapped to an...
US20120269303 Branch Processing of Search Tree in a Sphere Decoder  
Sphere decoding of signals for MIMO detection involves a first distance processor arranged to determine a distance between symbols of a received symbol vector and possible transmit symbols, in a...
US20110305303 INTERFERENCE CANCELLATION UNDER NON-STATIONARY CONDITIONS  
A method for timing and frequency synchronization in a wireless system is provided. The method comprises the steps of receiving a burst of symbols, selecting a subset of the burst of symbols,...
US20110090994 Decoding Method and Associated Apparatus  
A decoding method for determining a preferred survivor path in a decoding process is provided. The method includes calculating a first determination value of a first survivor path at a first time...
US20130077720 MULTI-STAGE TURBO EQUALIZATION AND INTERFERENCE CANCELLATION RECEIVER FOR WIRELESS SYSTEMS  
In a receive node of a wireless network, an iterative multi-user multi-stage interference cancellation receiver is used. The receiver performs code-averaged equalization and chip chip-level...
US20150215071 METHOD AND A NODE FOR DETECTING PHASE NOISE IN MIMO COMMUNICATION SYSTEMS  
A method for phase noise detection in a MIMO communication system comprises the step of computing an initial estimate of phase using received pilot symbols. A phase follows for interpolating...
US20120155579 Efficient Implementation of M-Algorithm Based on QR Decomposition for Higher-Order Constellations  
A method of detecting received data in a communication system includes the steps of: performing a QR decomposition on a received input vector as a function of one or more characteristics of a...
US20130003886 METHOD FOR GENERATING AND DETECTING PREAMBLE, AND DIGITAL COMMUNICATION SYSTEM BASED ON THE SAME  
Provided is a method of generating and detecting a preamble that may significantly increase accuracy of frame synchronization while avoiding a low frequency domain having great noise power and...
US20110206166 METHOD AND DEVICE FOR QUANTIZING LIKELIHOOD QUOTIENTS  
The invention relates to a method in signal processing for quantizing likelihood quotients of binary random variables for transmitting between at least two signal processing units. Decision levels...
US20110007853 Method For Selecting Transmitting Points In A Communication System  
The present invention provides a method for identifying a specific number of communicating points having relatively smallest accumulated path values from a plurality of transmitting points for a...
US20110080981 Method and System for Minimum Mean Squared Error Soft Interference Cancellation (MMSE-SIC) Based Suboptimal Maximum Likelihood (ML) Detection for Multiple Input Multiple Output (MIMO) Wireless System  
Various aspects of a method for minimum mean square error soft interference cancellation (MMSE-SIC) based sub-optimal maximum likelihood (ML) detection for a multiple input multiple output (MIMO)...
US20120177152 LOW LATENCY SIMD ARCHITECTURE FOR ITERATIVE DECODERS  
Systems, methods, and other embodiments associated with iterative decoders are described. According to one embodiment, an apparatus includes a set of decoders that are configured to receive data...
US20130142223 Detecting Format of a Transport Channel  
Disclosed are various embodiments of a system and method for determining a transport format of a transport channel. A guiding stream is received on a guiding transport channel and a guided stream...
US20110103527 Phase Detector For Timing Recovery Loop  
In one embodiment, a (hard-drive) read channel has a phase detector used in a timing recovery loop. The phase detector utilizes the sign bit and confidence value from a received log-likelihood...
US20130136210 Metric Corrections for Demodulators Using Serial Localization with Indecision  
Demodulation methods and apparatus for a multi-stage SLI demodulator are disclosed. Residual signals from each demodulation stage are modeled as finite sets of unresolved signals and a new metric...
US20130230128 Communication Method for Estimating Doppler Spread  
A communication method for estimating Doppler spread includes the following steps: transmitting a preamble signal to a receiver from a transmitter of a transmission terminal. The preamble signal...
US20150110205 Non-Disruptive Network Noise Measurement  
Presented herein are non-disruptive noise estimation techniques that utilize a correlation between attributes of a received signal and the noise to generate estimated noise values for symbols of...
US20150055722 ADAPTIVE NON-LINEAR MODEL FOR HIGHLY-SPECTRALLY-EFFICIENT COMMUNICATIONS  
A receiver may be operable to generate estimates of transmitted symbols using a sequence estimation process that may incorporate a non-linear model. The non-linear model may be adapted by the...
US20110085623 METHOD AND APPARATUS FOR EQUALIZATION OF RECEIVED SIGNALS  
A receiver for a mobile communication device comprises an primary detector for generating an initial sequence estimate comprising a plurality of initial symbol estimates from a received symbol...
US20120155560 LOW COMPLEXITY ITERATIVE MIMO RECEIVER BASED ON SUCCESSIVE SOFT INTERFERENCE CANCELLATION AND MMSE SPATIAL FILTERING  
A multiple-input multiple-output (MIMO) system for demapping uses a single stream system of iterative passes in a preferred order using the latest soft-information for better interference...