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公开(公告)号：US20180175972A1
公开(公告)日：2018-06-21
申请号：US15844734
申请日：2017-12-18
IPC分类号： H04L1/06 , H04B7/0417 , H04L25/02
摘要： Embodiments of the invention provide a decoder for decoding a signal received through a transmission channel in a communication system, said signal comprising a vector of information symbols, said transmission channel being represented by an upper triangular matrix, wherein the decoder comprises: a processing unit (309) configured to determine a set of division parameters depending on at least one division metric derived from components of said upper triangular matrix; a decoding unit (311) configured to divide said upper triangular matrix into two or more sub-matrices using said set of division parameters in accordance with a division of said vector of information symbols into two or more sub-vectors, and to determine at least one estimate of each sub-vector of information symbols by applying a symbol estimation algorithm, wherein the decoder is configured to determine at least one estimate of said vector of information symbols from the estimates of said sub-vectors of information symbols.
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公开(公告)号：US20180175971A1
公开(公告)日：2018-06-21
申请号：US15836162
申请日：2017-12-08
IPC分类号： H04L1/06 , H04B7/0413 , H04W4/00
CPC分类号： H04L1/0643 , H04B7/0413 , H04B7/0669 , H04B7/0891 , H04L1/0668 , H04L25/03191 , H04L25/03961 , H04W4/70 , H04W84/045
摘要： Embodiments of the invention provide a decoder for decoding a signal received through a transmission channel in a communication system, said signal comprising a vector of information symbols, wherein the decoder comprises: a processing unit (307) configured to determine at least one candidate set of division parameters and to perform a division of said vector of information symbols into a set of sub-vectors in association with each candidate set of division parameters, each pair of sub-vectors being associated with a division metric; a selection unit (309) configured to select one of said candidate sets of division parameters according to a selection criterion depending on said division metric; and a decoding unit (311) configured to determine at least one estimate of each sub-vector associated with said selected set of division parameters by applying a symbol estimation algorithm, wherein the decoder is configured to determine at least one estimate of the vector of information symbols from said at least one estimate of each sub-vector of information symbols.
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公开(公告)号：US20180083732A1
公开(公告)日：2018-03-22
申请号：US15568177
申请日：2016-04-27
摘要： There is provided a method of generating a space-time block code (STBC) for encoding a digital data sequence comprising a set of independent symbols to be transmitted through a transmission channel in a communication system, the space-time block code being represented by a set of linear dispersion matrices in a linear dispersion representation, each linear dispersion matrix comprising components having complex values, the method comprising, generating at least some of the linear dispersion matrices depending on component-wise conditions related to a set of selected pairs of the linear dispersion matrices, each pair comprising a first linear dispersion matrix and a second linear dispersion matrix, said component-wise conditions comprising a component-wise condition between the components of the first linear dispersion matrix and the components of the second linear dispersion matrix.
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公开(公告)号：US20170187433A1
公开(公告)日：2017-06-29
申请号：US15389765
申请日：2016-12-23
CPC分类号： H04B7/0413 , H04B7/0697 , H04L1/0031 , H04L1/0643 , H04L25/03006 , H04L27/2649 , H04W84/042 , H04W84/12
摘要： Embodiments of the invention provide a decoder for decoding a signal represented by a vector of information symbols received through a transmission channel in a communication system, said the transmission system being represented by a channel state matrix, said information symbols being selected from a given set of values carrying a set of information bits, wherein said decoder comprises: a division unit (202) configured to divide the channel state matrix into a number of sub-blocks of column vectors, in accordance with a division of said vector of information symbols into a number of sub-vectors; a permutation unit (203) configured to determine a set of permuted channel state matrices by permuting said sub-blocks of column vectors, the permutation unit (203) being further configured to select at least one permuted channel state matrix among said set of permuted channel state matrices according to a selection criterion; a sub-block decoding unit (207) configured to determine a transformed signal from said signal and said at least one permuted channel state matrix and determine at least one estimate of each sub-vector of information symbols from said transformed signal by applying at least one iteration of a decoding algorithm; The decoder being configured to determine at least one estimate of a vector of transmitted information symbols from said at least one estimate of each sub-vector of information symbols.
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公开(公告)号：US20170187432A1
公开(公告)日：2017-06-29
申请号：US15389612
申请日：2016-12-23
CPC分类号： H04B7/0413 , H04B7/0697 , H04L1/04 , H04L1/06 , H04L25/03 , H04L27/2649 , H04W84/042 , H04W84/12
摘要： Embodiments of the invention provide a decoder for decoding a data signal received through a transmission channel in a communication system, said transmission channel being represented by an upper triangular matrix, said signal carrying transmitted symbols, each symbol carrying a set of information bits, wherein said decoder comprises: a processing unit (213) configured to determine at least one sub-block decoding parameter given a target quality of service metric; A sub-block decoding unit (214) configured to divide said data signal into a number of sub-vectors based on said at least one sub-block decoding parameter in accordance with a division of said upper triangular matrix into a number of sub-matrices, said sub-block decoding unit (214) being further configured to determine at least one estimate of each sub-vector of transmitted symbols from said sub-vectors, and determine an estimate of the transmitted symbols from said estimates.
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公开(公告)号：US20170149533A1
公开(公告)日：2017-05-25
申请号：US15355311
申请日：2016-11-18
CPC分类号： H04L1/0052 , H04L25/03184 , H04L25/03191 , H04L25/03203 , H04L25/03305 , H04L25/03891
摘要： There is provided a decoder for sequentially decoding a data signal received through a transmission channel in a communication system, said data signal carrying transmitted symbols, said decoder comprising a symbol estimation unit (301) configured to determine estimated symbols representative of the transmitted symbols carried by the received signal from information stored in a stack, said symbol estimation unit (301) being configured to iteratively fill the stack by expanding child nodes of a selected node of a decoding tree comprising a plurality of nodes, each node of the decoding tree corresponding to a candidate component of a symbol of said data signal and each node being assigned a metric, the stack being filled at each iteration with a set of expanded child nodes and being ordered by increasing values of the metrics assigned to the nodes, the selected node for each iteration corresponding to the node being assigned the lowest metric in the stack, the decoder comprising a metric determination unit (302) configured to determine an initial metric for each child node of said set of expanded child nodes, wherein the decoder further comprises a modified metric calculation unit (303) configured to calculate a modified metric for at least one of the expanded child nodes from the metric associated with said expanded child node and a weighting coefficient, said weighting coefficient being a function of the level of said node in the decoding tree, the decoder assigning said modified metric to said at least one of the expanded child nodes.
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