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| Application No. | Application Title | Issue Date |
| 20120128104 | SPACE-TIME DECODER AND METHODS FOR DECODING ALAMOUTI-ENCODED SIGNALS IN HIGH-DOPPLER ENVIRONMENTS Embodiments of a space-time decoder and methods for decoding Alamouti-encoded signals in high-Doppler environments are generally described herein. Other embodiments may be described and claimed. In some embodiments, soft-symbol outputs are generated from received symbol... | 05/24/2012 |
| 20120128105 | MULTIANTENNA RECEIVING DEVICE A multiantenna receiving device is provided to make it possible to cope with both improvement in error rate characteristic and simplification in structure. The multiantenna receiving device is comprised of soft judgement output units for carrying out a soft judgement of... | 05/24/2012 |
| 20120106684 | 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 receiver implementations. Complexity reduction is achieved by using an approx... | 05/03/2012 |
| 20120106683 | METHOD AND APPARATUS FOR PARALLEL TURBO DECODING IN LONG TERM EVOLUTION SYSTEM (LTE) Provided are a method and an apparatus for parallel Turbo decoding in LTE, comprising: storing input check soft bits and a frame to be decoded, when storing said frame, dividing the frame into blocks, storing each block respectively as system soft bits; simultaneously p... | 05/03/2012 |
| 20120069935 | SYMBOL-LEVEL COMBINING FOR MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) SYSTEMS WITH HYBRID AUTOMATIC REPEAT REQUEST (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 symbols of the received signal vectors are combined, forming a... | 03/22/2012 |
| 20120051469 | CHANNEL-ADAPTIVE LIKELIHOOD DETERMINATION Methods and systems to compute likelihood measures of demodulated, complex-coordinate data points, to and dynamically scale the likelihood measures as a function of a channel statistic, and to decode the data points from the scaled likelihood measures. Likelihood measur... | 03/01/2012 |
| 20120051470 | System and Method for Iteration Scheduling in Joint Equalization and Turbo Decoding A system and method for iteration scheduling in joint equalization and turbo decoding are provided. A method for processing received information includes cancelling interference in a received signal bearing received information, decoding the interference cancelled recei... | 03/01/2012 |
| 20120051452 | MODIFIED CODED HYBRID SUBCARRIER AMPLITUDE PHASE POLARIZATION MODULATION Methods and systems for optical communication using hybrid subcarrier/amplitude/phase/polarization modulation are shown that include LDPC encoding a plurality of groups of bitstreams. The groups of bitstreams are mapped to the points of a three-dimensional constellation... | 03/01/2012 |
| 20120051415 | DEMODULATION OF 16-QAM, DCM DATA SYMBOLS USING TWO HYBRID-QPSK CONSTELLATIONS In one embodiment, a demapper uses two hybrid-QPSK constellations to demap pairs of equalized data symbols recovered from 16-QAM, DCM OFDM symbols, wherein the equalized data symbols in a pair correspond to the same four-bit group. A first hybrid-QPSK constellation is g... | 03/01/2012 |
| 20120045024 | METHODS AND APPARATUS FOR ITERATIVE DECODING IN MULTIPLE-INPUT-MULTIPLE-OUTPUT (MIMO) COMMUNICATION SYSTEMS Methods and apparatus for receiving, processing, and decoding MIMO transmissions in communications systems are described. A non-Gaussian approximation method for simplifying processing complexity where summations are used is described. Use of a priori information to fac... | 02/23/2012 |
| 20120039377 | Multiple-Input Multiple-Output System And Method A multiple-input multiple-output (MIMO) system can transmit on multiple antennas simultaneously and receive on multiple antennas simultaneously. Unfortunately, because a legacy 802.11a/g device is not able to decode multiple data streams, such a legacy device may “sto... | 02/16/2012 |
| 20120039423 | Method and System for Decoding Control Data in GSM-Based Systems Using Inherent Redundancy A method and system for decoding control data in GSM-based systems using inherent redundancy and physical constraints are presented. At least one estimated GSM-based bit sequence may be selected by performing searches that start from trellis junctions determined by the ... | 02/16/2012 |
| 20120033767 | 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 quantization algorithm. The quantization algorithm may be selected as a function of... | 02/09/2012 |
| 20120027130 | INTERFERENCE-WEIGHTED COMMUNICATION SIGNAL PROCESSING SYSTEMS AND METHODS A level of interference affecting signal components of received communication signals is estimated and used to weight the signal components. The signal components in a each of a number of groups of signal components are weighted based on respective interference estimate... | 02/02/2012 |
| 20120014475 | MULTI-ANTENNA COMMUNICATION APPARATUS AND METHOD OF MULTI-ANTENNA COMMUNICATION To reduce an error rate of received data, a MIMO processing unit receives data transmitted from a transmitter via antennas and separates packets of layers 0 to 3 transmitted from respective antennas of the transmitter. Maximal ratio combining units perform... | 01/19/2012 |
| 20120014483 | 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 scheme is independent from the operating signal-to-noise ratio (SNR... | 01/19/2012 |
| 20120014481 | Data Receiver with Improved Response to Long and Short Term Fading The invention relates to apparatus for the receipt of digital data which is transmitted as a data signal from a remote location and a method by which the receiving apparatus can be designed with a configuration to improve the ability to receive the data signal. The desi... | 01/19/2012 |
| 20120014482 | DATA COMMUNICATION DEVICES, METHODS, & SYSTEMS Data communication devices, methods, and systems are discussed in this application. In one embodiment, a receiving apparatus generally comprises a detector, an indicator, and a decision device. The detector can detect a number of data streams contained in a signal recei... | 01/19/2012 |
| 20110318021 | Feed-Forward Carrier Phase Recovery for Optical Communications The carrier phase of a carrier wave modulated with information symbols is recovered with a multi-stage, feed-forward carrier phase recovery method. A series of digital signals corresponding to the information signals is received. For each digital signal, a coarse phase ... | 12/29/2011 |
| 20110311002 | 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 decoder-input LLR values (Lch) are adjusted based on the number... | 12/22/2011 |
| 20110311003 | 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 repeat accumulate (IRA) codes. The EXIT chart technique is used for IRA channel... | 12/22/2011 |
| 20110310870 | HYBRID TIME AND FREQUENCY DOMAIN CSI FEEDBACK SCHEME In a downlink multi-user multiple input multiple output (DL MU-MIMO) system, channel state information (CSI) feedback duration may strongly affect media access control (MAC) efficiency. While a time domain compression may give a significant reduction in feedback duratio... | 12/22/2011 |
| 20110305303 | 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, iteratively adjusting the subset of the burst of symbols by a plurality of tim... | 12/15/2011 |
| 20110305270 | METHODS FOR OBTAINING A SET OF PATH METRICS AND EQUALIZER FOR A RECEIVER FOR DIGITAL DATA This invention relates to methods for obtaining a bin number of path metrics. When performing such methods, a histogram is provided, which comprises a bin number of values, a maximum value and a tail region left or right of the maximum value. A bin number of path metric... | 12/15/2011 |
| 20110299629 | 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 symbol generated from a second set of intermediate symbols, each set having... | 12/08/2011 |
| 20110299637 | Message Decoding for Discretized Signal Transmissions Methods, devices and systems for sensor-based wireless communication systems using compressive sampling are provided. In one embodiment, the method for sampling signals comprises receiving, over a wireless channel, a user equipment transmission based on an S-sparse comb... | 12/08/2011 |
| 20110280345 | TAIL-BITING CONVOLUTIONAL DECODING Methods and apparatuses for enhanced processing of received channels in a mobile communications system is described. Particularly, convolutionally encoded tail biting data in a mobile communications system is efficiently decoding by replicating the received encoded sign... | 11/17/2011 |
| 20110280347 | Method for demodulating signals from a multi-access system able to collide and equipment for implementing same A method for demodulating time-multiplexed signals able to mutually collide, in particular in the case of an AIS (Automatic Identification System), being a communications system between ships allows collisions between these ships to be limited and allows the maritime tr... | 11/17/2011 |
| 20110280346 | METHOD AND APPARATUS FOR FACILITATING TRI-STATE DECODING ON A SHARED UPLINK CHANNEL Methods, apparatuses, and computer program products are disclosed for facilitating decoding a communication received from a wireless terminal. Encoded bits are received from the wireless terminal via a shared uplink channel, and a plurality of acknowledgment tones are i... | 11/17/2011 |
| 20110274219 | Apparatus for Estimating Frequency Offset in OFDM System Provided is an apparatus for estimating a frequency offset by one training symbol including two symbols having the same structure and value in an OFDM system. The apparatus includes a first likelihood function calculator for modeling non-Gaussian impulsive noise include... | 11/10/2011 |
| 20110261909 | Frequency Offset Estimation A frequency offset of a received signal comprising a number of subsequently received data symbols is estimated. A first estimate is determined from a calculated change in phase of the received signal between two received symbols having a first time distance between them... | 10/27/2011 |
| 20110260918 | METHOD AND APPARATUS FOR A WIRELESS MOBILE SYSTEM IMPLEMENTING BEAM STEERING PHASE ARRAY ANTENNA In a preferred embodiment, a wireless mobile system implementing Beam Steering Phased Array Antenna is disclosed having an array of [N×N] antennas mounting on the wireless mobile Terminal transmits unidirectional signals directly to the Base Station as opposed to trans... | 10/27/2011 |
| 20110261908 | SOFT DEMAPPING METHOD AND APPARATUS AND COMMUNICATION SYSTEM THEREOF An exemplary embodiment of the present disclosure provides a soft demapping method. In the soft demapping method, each shortest Euclidean distance of the Euclidean distances from all possible signal vectors corresponding to the bits which are not obtained during a signa... | 10/27/2011 |
| 20110243282 | Method of Estimating the Symbols of a Digital Signal and Receiver for Implementing Said Method The invention relates to a method of estimating symbols carried by a digital signal that is received by a receiver over a communication channel (5), said symbols being multiplexed or orthogonal frequency sub-carriers. The inventive method comprises the following ... | 10/06/2011 |
| 20110243281 | 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 that may be achieved by the reduced state Viterbi detector by the pipeline... | 10/06/2011 |
| 20110235622 | METHOD AND APPARATUS TO ADJUST RECEIVED SIGNAL A wireless communication device, a wireless communication system and a method to adjust transmitted signals constellation in a maximum likelihood multiple-input-multiple-output receiver by transmitting an EVM deviation value. The EVM deviation value may be added to a pr... | 09/29/2011 |
| 20110235757 | DECODING METHOD AND DECODING DEVICE The decoding method comprises storing, successively performing, determining, first performing, second performing, and outputting. The storing stores the N received branchwords in memory. The successively performing performs Viterbi updates on a sequence of branchwords. ... | 09/29/2011 |
| 20110228883 | 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 frames is encoded in the same manner the payloads are encoded. Decision m... | 09/22/2011 |
| 20110216857 | RECEIVER FOR A WIRELESS TELECOMMUNICATION SYSTEM WITH A CHANNEL DEINTERLEAVER A receiver for wireless broadband telecommunication transmissions, the receiver including a demodulator for receiving transmitted modulated symbols, a channel deinterleaver memory coupled to the demodulator for receiving interleaved soft symbols and outputting deinterle... | 09/08/2011 |
| 20110211659 | Low-latency Viterbi survivor memory architecture and method using register exchange, trace-back, and trace-forward In various aspects, the disclosure describes systems and methods for decoding of convolutionally encoded signals representing, for example, telecommunications signals such as command or content signals used in digital telecommunications. In various embodiments such aspe... | 09/01/2011 |
