Patent application number | Description | Published |
20110296280 | METHOD, DEVICE AND COMPUTER-READABLE STORAGE MEDIUM FOR CONFIGURING AN OVERALL ENCODING/DECODING SCHEME IN A COMMUNICATIONS NETWORK - A method is provided for configuring an overall encoding scheme comprising a first encoding for generating first encoded packets from source packets and a second encoding for generating second encoded packets by combination of first encoded packets according to a combination scheme applied by predetermined nodes of the network. The method obtains a number N of defective paths among paths used to transmit the first and second encoded packets to at least one destination node, a path being defective if an associated quality of transmission is below a predetermined threshold. A combination scheme is selected from among at least two possible predetermined combination schemes for which a number of encoded second packets is greater than or equal to N. | 12-01-2011 |
20130038796 | Error concealment method for wireless communications - The invention relates to a method of reconstructing pixel values of a video frame for concealing corrupted pixel values. The method comprising receiving, by a receiving unit, of a signal from a communication channel and delivering by the receiving unit of video packets comprising pixel values possibly corrupted with errors; associating confidence levels with pixel values comprised in the video packets as delivered by the receiving unit; and reconstructing pixel values usable for display from the received pixel values, wherein a reconstructed value for a given pixel is obtained from the received values of a set of pixels, including the given pixel, weighted by their associated confidence levels. | 02-14-2013 |
20130044835 | Data blocks encoding and transmission over a diversity communication network - The invention relates to a method of transmitting a data unit over a plurality of transmission paths of a wireless communication system that is adapted to minimize bandwidth usage and energy consumption while maintaining transmission robustness. A method of transmitting K data blocks of a data unit comprises the steps of encoding the data unit into an encoded data unit comprising N encoded blocks, with N>K, using an error correction code having a minimum distance d; and transmitting the N blocks of the encoded data unit over a set of N | 02-21-2013 |
20130128987 | Communication of data blocks over a communication system - The invention relates to a method of transmitting and receiving a primary data stream of data blocks, each data block formed by a plurality of N symbols, over a communication system that is robust to transmission errors and signal interruptions due to obstacles, and that minimizes bandwidth usage. The transmitting method comprising: forming a secondary data stream comprising shortened data blocks formed from the M most significant symbols of data blocks of the primary data stream, where M05-23-2013 | |
20130315140 | RECEPTION QUALITY ASSESSMENT - A method for assessing reception quality of a common transmission by a set of receivers comprising deriving a reception quality for different combinations of the set, and assessing each against a threshold which varies according to the number of receivers in the respective combination. A single assessment of quality can be produced which takes into account multiple different receivers, and multiple different combinations of such receivers. Such assessment allows transmission power and/or the number of active receivers to be set according to a given reception criteria. | 11-28-2013 |
20140040675 | DATA PROCESSING METHOD AND APPARATUS - A method for processing a plurality of received copies of the same original data, the method comprising performing maximum ratio combining on equivalent data portions of the received copies to derive at least one further equivalent data portion. The received and the constructed copies are then divided into sub-portions and combinations of divided sub-portions are assembled to provide reconstructed data portions. An error rate assessment is performed on the reconstructed data portions; and on this basis one is selected as an output. | 02-06-2014 |
20140059402 | METHOD AND APPARATUS FOR CONTROLLING THE DECODING OF CODEWORDS RECEIVED BY A LINEAR BLOCK CODE PIPELINED DECODER FROM AN INPUT BUFFER - A computer implemented method of controlling the decoding of codewords received by a linear block code pipelined decoder from an input buffer, the pipelined decoder comprising at least two decoding stages. The method comprises iteratively: loading the decoding stages of the pipelined decoder, executing a decoding step, determining the number of residual errors in the codewords and outputting error free codewords. The method allows the different decoding stages to be loaded with any codeword coming from the buffer or from any decoding stage of the decoder. Accordingly, the occupation rate of the pipeline is improved. | 02-27-2014 |
20140157093 | METHOD AND DEVICE FOR IMPROVING DECODING OF DATA RECEIVED FROM ONE SOURCE BY SEVERAL RECEIVERS - Improving decoding of a set of k data symbols received from several receivers, the data symbols being encoded by a systematic block error correcting code of dimension k and size n. The set of data symbols is received along with a corresponding subset of parity symbols, forming a partial data block comprising m symbols. A partial data block transmitted by one emitter, comprising a set of k data symbols and a subset of (m−k) parity symbols, is received from each receiver. For each received partial data block, a subset of parity symbols is generated and an item of reliability information is computed as a function of the received parity symbols and parity symbols generated from a received set of data symbols. The items of computed reliability information are compared with each other to select one received set of data bits. | 06-05-2014 |
20140344649 | Method and device for processing received data - A method and device for decoding a plurality of packets of same data. Each packet is encoded using a product code. An encoded packet comprises data blocks is organized into rows and columns. Each of the rows and columns has a respective error detecting code. For a data packet, Erroneous row and column data are detected by their associated error detecting code. In the data packet, a potentially erroneous data block belonging to a row and a column of data blocks both having been detected as erroneous is detected. In another data packet of the same data, a non-erroneous data block corresponding to the identified potentially erroneous data block is determined. The data block is determined as non-erroneous if it belongs to at least one row or column of data having been detected as non-erroneous. The identified potentially erroneous block is replaced with the determined non-erroneous block. | 11-20-2014 |