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Class 714/786 - Forward error correction by tree code (e.g., convolutional)


Subclass of Class 714 - Error detection/correction and fault detection/recovery
Definition: Subject matter in which information bits are encoded to
No. of applications: 99
Last issue date: 05/03/2012


1      
Application No.Application TitleIssue Date
20120110422TRANSMISSION DEVICE
A transmission device in a communication system where a systematic code obtained by systematic encoding of information bits into which dummy bits are inserted and by deletion of the dummy bits from the results of the systematic encoding is transmitted. The transmission ...
05/03/2012
20120030538Forward Error Correction Decoding
A system may be used to predict when a decoding process will fail to correct an error burst within a transmission. A decoder may receive an input bit stream and process it to produce an output bit stream, which may be convolutionally encoded. K-bits of the convolutional...
02/02/2012
20110320920CODING APPARATUS, RECEIVING APPARATUS, WIRELESS COMMUNICATION SYSTEM, PUNCTURING PATTERN SELECTING METHOD AND PROGRAM THEREOF
By controlling to select encoding appropriately considering characteristics of equalization and decoding of a receiving apparatus employing a turbo equalization technology, it is possible to attain a high transmission characteristic. Information bits of two systems incl...
12/29/2011
20110314358Method and Circuit for BER Estimation
This invention relates to a method and a circuit for estimating the bit error rate in a data transmission system. Symbols are detected (u) by a maximum likelihood detector (1), which provides path metrics of the decoded path and the best competitor at predetermin...
12/22/2011
20110289391INTERLEAVER DEVICE AND RECEIVER FOR A SIGNAL GENERATED BY THE INTERLEAVER DEVICE
The inventive concept enables backward-compatible extension of existing interleaver-based transmission systems to the effect that in addition to an existing logical transport channel, which is interleaved using a standardized interleaver profile, further logical transpo...
11/24/2011
20110264988CONVOLUTIONAL CODE FOR USE IN A COMMUNICATION SYSTEM
In a communication system, a transmitter receives an input bit, and in response thereto, generates at least an n-bit codeword, each bit of which is generated by a respective one of n generators of which m are exactly the same, m being greater than n/2. A receiver compri...
10/27/2011
20110258521INTERLEAVING SCHEME FOR AN LDPC CODED QPSK/8PSK SYSTEM
An approach is provided for interleaving low density parity check (LDPC) encoded bits in QPSK/8PSK modulation systems. By assigning the bits determining modulation symbols based on different bit degrees, one can efficiently find the desirable tradeoff between error perf...
10/20/2011
20110167321APPARATUS AND METHOD OF TRANSMITTING AND RECEIVING DATA FOR IMPROVING TRANSMISSION RATE
A data transmitter and receiver for improving a data rate, and more particularly, to an apparatus and method of transmitting and receiving an orthogonal frequency division multiplexing (OFDM) symbol in which a pilot signal is added to a data signal is provided. The appa...
07/07/2011
20110119567SIGNAL PROCESSING METHOD AND COMMUNICATION SYSTEM USING THE SAME
A signal processing circuit in a transmitter of a communication system comprises an appending circuit, a scrambler, an FEC encoder and a stream parser. The appending circuit is configured to divide a packet data string into a plurality of divided data strings, append a ...
05/19/2011
20110113307APPARATUS AND METHOD FOR TRANSMITTING DATA USING A CTC (CONVOLUTIONAL TURBO CODE) ENCODER IN A MOBILE COMMUNICATION SYSTEM
Disclosed are an apparatus and a method for transmitting data using a CTC (Convolutional Turbo Code) encoder in a mobile communication system. The data transmission method according to the present invention includes: a first encoding step of encoding input data bits inp...
05/12/2011
20110103578SYSTEMS AND METHODS FOR EFFICIENTLY CREATING DIGESTS OF DIGITAL DATA
Systems and methods efficiently process digests, hashes or other results by performing multiplicative functions in parallel with each other. In various embodiments, successive processing stages are provided, with each stage performing parallel multiplicative functions a...
05/05/2011
20110060970METHOD OF PERFORMING INTERLEAVING AND DATA TRANSMISSION APPARATUS
A method of performing interleaving and a data transmission apparatus are disclosed, in which interleaving is performed for input data streams using bit reverse ordering (BRO) operation. A method of performing interleaving for input data streams comprises writing respec...
03/10/2011
20110060971TAIL-BITING DECODING METHOD AND DEVICE
A tail-biting decoding method and device are provided, so as to improve accuracy of backtracking state determination and decrease decoding delay. The method includes the following steps. Survivor paths of a training system are acquired. The training system is formed of ...
03/10/2011
20110047445METHOD FOR RECOVERY OF LOST AND/OR CORRUPTED DATA
A method for recovery of lost and/or corrupted data, whereby this data is encoded by means of an encoder connected to the transmitter device and transmitted via a transmission channel to the receiver device. The transmitted data is decoded by means of a decoder connecte...
02/24/2011
20110041042APPARATUS AND METHOD FOR DETERMINING INTERLEAVED ADDRESS OF TURBO INTERLEAVER
An apparatus and method for determining interleaved addresses of a turbo interleaver are disclosed. A new interleaving size of received data is compared with a previously-stored interleaving size. When the compared interleaving sizes are equal to each other, the receive...
02/17/2011
20110041044ENCODER, DECODER, AND ENCODING METHOD
An encoder and decoder using LDPC-CC (Low Density Parity Check-Convolutional Codes) is disclosed. The encoder exhibits encoding rates realized with a small circuit-scale and a high data reception quality. In the encoder (200), an encoding rate setting unit (25...
02/17/2011
20110029826Systems and Methods for Re-using Decoding Parity in a Detector Circuit
Various embodiments of the present invention provide systems and methods for data processing. For example, a method for data processing is disclosed that includes receiving an LDPC codeword, and grouping active bits from the LDPC codeword into a series of data bits incl...
02/03/2011
20100325521UNEQUAL DELAY CODES FOR BURST-ERASURE CHANNELS
An error correction code includes a separate error code portion for each of two or more separate burst erasure durations (or burst error durations). For each burst erasure duration, the code can be employed to recover from the burst erasure with a different delay time. ...
12/23/2010
20100318873Tree Decoding Method For Decoding Linear Block Codes
A tree decoding method for decoding a linear block code is provided. According to the tree decoding method, an estimated path metric of node v is f(y)=g(v)+h(v), where g(v) represents a sum of bit metrics of all bits on a path from the root node to the node v, and h(v) ...
12/16/2010
20100299581SERIAL TURBO TRELLIS CODED MODULATION USING A SERIALLY CONCATENATED CODER
Serial concatenated trellis coded modulation (SCTCM) includes an outer coder, an interleaver, a recursive inner coder and a mapping element. The outer coder receives data to be coded and produces outer coded data. The interleaver permutes the outer coded data to produce...
11/25/2010
20100299583OPTIMIZED VITERBI DECODER AND GNSS RECEIVER
A Viterbi decoder which is based on a special instruction set implemented in the processor, enabling it to handle the Viterbi processing with a much lower CPU loading without significantly increasing the hardware complexity. By careful application of appropriate design ...
11/25/2010
20100287453ENCODING AND DECODING METHODS FOR EXPURGATED CONVOLUTIONAL CODES AND CONVOLUTIONAL TURBO CODES
A convolutional encoder (50) comprises an expurgation unit (22) and a first component convolutional encoder section (24). A convolutional turbo encoder (20) comprises an expurgation unit (22); a first component convolutional encoder se...
11/11/2010
20100287452Tail-biting convolutional codes for uplink fast feedback control channel
An apparatus and method for processing fast feedback payload data to generate symbols for transmission through a fast feedback channel in a wireless network are presented. The technique first encodes payload data using a tail biting convolutional code. The encoded bits ...
11/11/2010
20100262895Turbo-Coding DOCSIS Information for Satellite Communications
Methods and systems for modifying DOCSIS-based transmission paths for communication in higher frequency and/or wireless environments, such as wireless terrestrial communication systems and satellite communication systems. An inner turbo-code is combined with a DOCSIS ba...
10/14/2010
20100235722HS-PDSCH DECODER AND MOBILE RADIO-SIGNAL COMMUNCATION DEVICE INCLUDING THE SAME
The second rate de-matching unit carries out a second rate de-matching step in parallel to each of two data defining the received data Rx for removing bits having been repeated in a second rate matching step having been carried out in a base station, or de-removing bits...
09/16/2010
20100235720CHANNEL ENCODING AND DECODING APPARATUSES AND METHODS
An encoding apparatus for use in a radio transmitter has a unit for turbo-SPC encoding a plurality of information bits which bits constitute a transmit signal, and deriving at least one set of redundant bits from one set of the information bits; and a redundancy-adjusti...
09/16/2010
20100235706INTERLEAVER APPARATUS AND RECEIVER FOR A SIGNAL GENERATED BY THE INTERLEAVER APPARATUS
A convolution interleaver for processing a codeword derived from an input block of symbols using a redundancy-adding coding, and having more symbols than the input block, wherein the codeword has a sequence of interleaving units, wherein each interleaving unit has at le...
09/16/2010
20100235721Rate Matching and De-Rate Matching for an LTE Transport Channel
Described embodiments provide for rate matching with an encoded sequence of data bits. The encoded sequence of data bits is divided into two or more sub-blocks, with each sub-block having at least one column of bits, each including a set of valid bits. A set of dummy bi...
09/16/2010
20100223524Forward Error Correction Decoding Avoidance Based on Predicted Code Block Reliability
A method and device for performing forward error (FEC) correction avoidance based upon predicted block code reliability in a communications device is provided. An avoidance unit comprising a metric computation unit and a decision unit generates a reliability metric base...
09/02/2010
20100223534Code Block Reordering Prior to Forward Error Correction Decoding Based On Predicted Code Block Reliability
Method and a receiver in a communication system for receiving a transport block. The transport block comprises code blocks, each of the code blocks includes an error detection code and an error correction code. Reliability metrics are determined using an input generated...
09/02/2010
20100218075APPARATUS AND METHOD FOR TRANSMITTING SIGNAL USING BIT GROUPING IN WIRELESS COMMUNICATION SYSTEM
An apparatus and method for transmitting a signal using a bit grouping method in a wireless communication system is disclosed. Interleaved subblocks are maintained, and output bit sequences are modulated in due order after bit grouping and bit selection. The bit groupin...
08/26/2010
20100202334SYSTEMS AND METHODS FOR REDUCING POWER CONSUMPTION USING A VARIABLE CONSTRAINT LENGTH CONVOLUTIONAL ENCODER
Systems and methods are provided for selecting transmission parameters used in the transmission of a communication signal in a wireless communications device. In one embodiment, a computer-implemented method for determining a convolutional code constraint length and/or ...
08/12/2010
20100202575Interference cancellation with a time-sliced architecture
Example embodiments include methods of interference cancellation at NodeB receivers of baseband antenna signals including physical channels. The methods include canceling interference from a received baseband antenna signal by removing a reconstructed baseband signal fr...
08/12/2010
20100192047TRANSMITTING DEVICE AND TRANSMITTING METHOD
A transmitting device and method enabling improvement of the reception quality on the receiving side when the LDPC-CC (Low-Density Parity-Check Convolutional Codes) encoding is used. The transmitting device (100) comprises an LDPC-CC encoding section (102)...
07/29/2010
20100192046CHANNEL ENCODING
A channel encoding method of calculating, using a programmable processor, a code identical with a code obtained with a hardware channel encoder. The method comprises:—a first step (112, 120; 222) of reading the result of a first sub-system of parallel XOR opera...
07/29/2010
20100185923DECODING OF RECURSIVE CONVOLUTIONAL CODES BY MEANS OF A DECODER FOR NON-RECURSIVE CONVOLUTIONAL CODES
Embodiments of the invention provide a decoder arrangement (400), wherein a decoder (420) which is adapted to decode a bitstream which has been encoded with a non-recursive convolutional encoder is used to at least partially perform the decoding of a recur...
07/22/2010
20100169749METHOD AND APPARATUS FOR CONCATENATED CONVOLUTIONAL ENCODING AND INTERLEAVING
A method and apparatus encode a source data stream via convolutional encoding or selected encoding scheme. Plural encoded data streams are interleaved and transmitted on a transmission channel. Data groups generated via convolutional or selected encoding are interleaved...
07/01/2010
20100169747OPTIMUM DISTANCE SPECTRUM FEEDFORWARD LOW RATE TAIL-BITING CONVOLUTIONAL CODES
Method and apparatus for generating a set of generator polynomials for use as a tail biting convolutional code to operate on data transmitted over a channel comprises: (0) specifying a constraint and a low code rate for a tail biting convolutional code, where the low ra...
07/01/2010
20100153826APPARATUS AND METHOD FOR TAIL BITING CONVOLUTIONAL ENCODING
Provided are an apparatus and a method for tail biting convolutional encoding. The apparatus includes a plurality of shift registers and at least one operator. The plurality of shift registers sequentially performs a shift operation on input bit-stream. The operator out...
06/17/2010
20100131820DIGITAL BROADCASTING SYSTEM AND METHOD OF PROCESSING DATA THEREOF
A digital broadcasting system and data processing method are disclosed, which are highly resistant to channel changes and noise. The present invention includes receiving a broadcast signal having mobile service data and main service data multiplexed with each other from...
05/27/2010
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