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公开(公告)号：US20170366206A1
公开(公告)日：2017-12-21
申请号：US15607584
申请日：2017-05-29
申请人： RAN ZHANG , WUXIAN SHI , NAN CHENG , YIQUN GE
发明人： RAN ZHANG , WUXIAN SHI , NAN CHENG , YIQUN GE
CPC分类号： H03M13/6362 , H03M13/005 , H03M13/13 , H04L1/0068
摘要： General polar codes are disclosed that encode symbols of a q-ary alphabet, where q≧2. Systems and methods are also disclosed for performing code rate matching when using general polar codes. In one embodiment, a method performed at a transmitter includes receiving a plurality of bits at a polar encoder. The plurality of bits represent a plurality of q-ary symbols, where q>2. The method further includes encoding the plurality of bits using the polar encoder to generate a codeword of q-ary symbols represented by bits. The method further includes puncturing the codeword according to a puncturing pattern to obtain a punctured codeword having a reduced bit length.
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公开(公告)号：US20180278389A1
公开(公告)日：2018-09-27
申请号：US15901238
申请日：2018-02-21
申请人： LOUIS-PHILIPPE HAMELIN , YIQUN GE , WUXIAN SHI , RAN ZHANG , NAN CHENG
发明人： LOUIS-PHILIPPE HAMELIN , YIQUN GE , WUXIAN SHI , RAN ZHANG , NAN CHENG
CPC分类号： H04L5/0046 , H03M13/033 , H03M13/13 , H04L1/0009 , H04L1/0041 , H04L1/0057 , H04L1/0068
摘要： Coding sub-channel selection involves, in an embodiment, determining, from sub-channels that are defined by a code and that have associated reliabilities for input bits at input bit positions, a first number of the sub-channels to carry bits that are to be encoded. A second number of the sub-channels, greater than the first number, are selected. The second number of sub-channels are selected to provide exactly the first number sub-channels to be available to carry the bits that are to be encoded.
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公开(公告)号：US20170366199A1
公开(公告)日：2017-12-21
申请号：US15611201
申请日：2017-06-01
申请人： YIQUN GE , RAN ZHANG , NAN CHENG , WUXIAN SHI
发明人： YIQUN GE , RAN ZHANG , NAN CHENG , WUXIAN SHI
CPC分类号： H03M13/091 , G06F11/1479 , H03M13/09 , H03M13/13 , H04L1/0041 , H04L1/0045 , H04L1/0053 , H04L1/0054 , H04L1/0057 , H04L1/0061
摘要： A first error-detecting code (EDC) is computed based on a first segment of a block of information that is to be encoded, and a second EDC is computed based on at least a second segment of the block of information. The first EDC is masked with a first masking segment and the second EDC with a second masking segment to generate a first masked EDC and a second masked EDC. The first masking segment and the second masking segment are associated with a target receiver of the block of information. A codeword is generated based on a code and an input vector that includes the first segment, the first masked EDC, the second segment, and the second masked EDC. This type of coding could be useful to support early termination of blind detection at a decoder, for example.
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公开(公告)号：US20170366205A1
公开(公告)日：2017-12-21
申请号：US15607591
申请日：2017-05-29
申请人： RAN ZHANG , WUXIAN SHI , NAN CHENG , YIQUN GE
发明人： RAN ZHANG , WUXIAN SHI , NAN CHENG , YIQUN GE
摘要： Systems and methods are disclosed that relate to performing rate matching when using polar codes. In one embodiment, a plurality of bits are received at a polar encoder. A value is obtained that corresponds to at least one of: a coding rate to be used to transmit the plurality of bits, and a number of coded bits to be used to transmit the plurality of bits. It is determined which range of values the value falls within, and an information sequence is obtained that corresponds to the range the value falls within. The plurality of bits are mapped to a subset of positions of an input vector according to the information sequence. The remaining positions of the input vector are set as frozen values that are known by a decoder. The input vector is then encoded in the polar encoder to generate a codeword.
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公开(公告)号：US20200014401A1
公开(公告)日：2020-01-09
申请号：US16511180
申请日：2019-07-15
申请人： YIQUN GE , RAN ZHANG , NAN CHENG , WUXIAN SHI
发明人： YIQUN GE , RAN ZHANG , NAN CHENG , WUXIAN SHI
摘要： A first error-detecting code (EDC) is computed based on a first segment of a block of information that is to be encoded, and a second EDC is computed based on at least a second segment of the block of information. The first EDC is masked with a first masking segment and the second EDC with a second masking segment to generate a first masked EDC and a second masked EDC. The first masking segment and the second masking segment are associated with a target receiver of the block of information. A codeword is generated based on a code and an input vector that includes the first segment, the first masked EDC, the second segment, and the second masked EDC. This type of coding could be useful to support early termination of blind detection at a decoder, for example.
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公开(公告)号：US20170366204A1
公开(公告)日：2017-12-21
申请号：US15611281
申请日：2017-06-01
申请人： WUXIAN SHI , RAN ZHANG , NAN CHENG , YIQUN GE
发明人： WUXIAN SHI , RAN ZHANG , NAN CHENG , YIQUN GE
CPC分类号： H03M13/616 , H03M13/09 , H03M13/13 , H03M13/134 , H03M13/3769 , H04L25/061
摘要： The present disclosure relates to multiple-symbol combination based decoding for general polar codes. Multiple-symbol combination based decoding of a received word that is based on a codeword involves determining whether all nodes at an intermediate stage of the multiple-symbol combination based decoding, which provide their outputs as inputs to a subset of nodes at a next stage of the multi-symbol combination based decoding, are associated with trust symbols in the received word that have a higher reliability of being successfully decoded than doubt symbols in the received word. A hard decision is performed in response to a positive determination.
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7.发明申请公开(公告)号：US20170364399A1
公开(公告)日：2017-12-21
申请号：US15607593
申请日：2017-05-29
申请人： WUXIAN SHI , YIQUN GE , NAN CHENG , RAN ZHANG
发明人： WUXIAN SHI , YIQUN GE , NAN CHENG , RAN ZHANG
CPC分类号： G06F11/073 , G06F11/1482 , H03M13/13 , H03M13/618 , H03M13/635 , H03M13/6362 , H04L1/0013 , H04L1/0041 , H04L1/0057 , H04L1/0069
摘要： Systems and methods are disclosed for performing rate matching when using general polar codes. In one embodiment, a method of generating a codeword includes receiving bits at a polar encoder and encoding the bits using polar encoder kernels. The polar encoder kernels include a first kernel and a second kernel. The first kernel receives a set of input q-ary symbols and modifies the set of input q-ary symbols according to a first kernel generator matrix to produce a set of output q-ary symbols. The second kernel receives a set of input l-ary symbols, where l does not equal q, and modifies the set of input l-ary symbols according to a second kernel generator matrix to produce a set of output l-ary symbols. For example, the first kernel may be a binary kernel and the second kernel may be a Reed-Solomon (RS) based kernel.
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公开(公告)号：US20190158128A1
公开(公告)日：2019-05-23
申请号：US16253082
申请日：2019-01-21
申请人： YIQUN GE , WUXIAN SHI
发明人： YIQUN GE , WUXIAN SHI
摘要： Methods, apparatuses, and systems for implementing error-correction in communication systems, particularly wireless communication systems, are provided. A Polar code-based encoding method combines first and second pluralities of information bits and error-correcting code bits, and a plurality of frozen bits, into an input vector. The input vector is encoded according to a Polar code to produce a first codeword, which improves the probability of successfully transmitting and receiving the codeword over a physical channel in the communication system.
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公开(公告)号：US20170155405A1
公开(公告)日：2017-06-01
申请号：US15364521
申请日：2016-11-30
申请人： YIQUN GE , WUXIAN SHI
发明人： YIQUN GE , WUXIAN SHI
摘要： A signature-enabled Polar code encoder and decoder are provided. Signature bits are inserted in some unreliable bit positions. Different signature bits are inserted for different receivers. For a given codeword, only the receiver with knowledge of the signature can decode the codeword. Cyclic redundancy check (CRC) bits may be included in the input vector to assist in decoding.
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公开(公告)号：US20180375532A1
公开(公告)日：2018-12-27
申请号：US16117863
申请日：2018-08-30
申请人： YIQUN GE , WUXIAN SHI
发明人： YIQUN GE , WUXIAN SHI
摘要： A transmitter and receiver are provided for communication over a noisy channel in a wireless communications system. The transmitter and receiver use polar coding to provide reliability of data transmission over the noisy wireless channel. In addition, signature bits are inserted in some unreliable bit positions of the polar code. For a given codeword, the receiver with knowledge of the signature can more effectively decode the codeword. Cyclic redundancy check (CRC) bits may also included in the input vector to assist in decoding.
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