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公开(公告)号：US11855776B2
公开(公告)日：2023-12-26
申请号：US17645243
申请日：2021-12-20
Applicant: QUALCOMM Incorporated
Inventor： Jing Jiang , Gabi Sarkis , Yang Yang , Shrinivas Kudekar , Joseph Binamira Soriaga , Hari Sankar , Changlong Xu , Chao Wei
CPC classification number: H04L1/0057 , H04L1/0041
Abstract: Methods, systems, and devices for encoding and decoding are described. To encode a vector, an encoder allocates information bits of the vector to channel instances of a channel that are separated into groups. The groups may vary in size and allocation of the information bits is based on a base sequence of a given length. During decoding, a decoder assigns different bit types to channels instances by dividing a codeword into a plurality of groups and assigning bit types to channel instances of the plurality of groups using the base sequence.
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公开(公告)号：US11831332B2
公开(公告)日：2023-11-28
申请号：US18051689
申请日：2022-11-01
Applicant: QUALCOMM Incorporated
Inventor： Thomas Joseph Richardson , Shrinivas Kudekar
IPC: H03M13/11 , H03M13/00 , H03M13/03 , H04L1/1812 , H04L1/00
CPC classification number: H03M13/1148 , H03M13/036 , H03M13/116 , H03M13/616 , H03M13/6306 , H03M13/6393 , H03M13/6505 , H03M13/6516 , H04L1/0041 , H04L1/0056 , H04L1/0058 , H04L1/0067 , H04L1/1812 , H04L1/1819
Abstract: Certain aspects of the present disclosure generally relate to techniques for puncturing of structured low-density parity-check (LDPC) codes. Certain aspects of the present disclosure generally relate to methods and apparatus for a high-performance, flexible, and compact LDPC code. Certain aspects can enable LDPC code designs to support large ranges of rates, blocklengths, and granularity, while being capable of fine incremental redundancy hybrid automatic repeat request (IR-HARD) extension while maintaining good floor performance, a high-level of parallelism to deliver high throughout performance, and a low description complexity.
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公开(公告)号：US11277151B2
公开(公告)日：2022-03-15
申请号：US16714606
申请日：2019-12-13
Applicant: QUALCOMM Incorporated
Inventor： Joseph Binamira Soriaga , Gabi Sarkis , Shrinivas Kudekar , Thomas Richardson , Vincent Loncke
Abstract: Aspects of the present disclosure relate to low density parity check (LDPC) coding utilizing LDPC base graphs. Two or more LDPC base graphs may be maintained that are associated with different ranges of overlapping information block lengths. A particular LDPC base graph may be selected for an information block based on the information block length of the information block. Additional metrics that may be considered when selecting the LDPC base graph may include the code rate utilized to encode the information block and/or the lift size applied to each LDPC base graph to produce the information block length of the information block.
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34.发明授权公开(公告)号：US11043966B2
公开(公告)日：2021-06-22
申请号：US15591625
申请日：2017-05-10
Applicant: QUALCOMM Incorporated
Inventor： Thomas Joseph Richardson , Shrinivas Kudekar
Abstract: Techniques and apparatus are provided for efficiently generating multiple lifted low-density parity-check (LDPC) codes for a range of block lengths and having good performance. A method for wireless communications by a transmitting device generally includes selecting integer lifting values for a first lifting size value Z, selected from a range of lifting size values, wherein the selected integer lifting value is greater than a maximum lifting size value of the range of lifting size values; determining one or more integer lifting values for generating at least a second lifted LDPC code having a second lifting size value based on an operation involving the second lifting size value and the selected one or more integer lifting values for generating the first lifted LDPC code; encoding a set of information bits based on the second lifted LDPC to produce a code word; and transmitting the code word.
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公开(公告)号：US11031953B2
公开(公告)日：2021-06-08
申请号：US16387130
申请日：2019-04-17
Applicant: QUALCOMM Incorporated
Inventor： Thomas Joseph Richardson , Shrinivas Kudekar
Abstract: Certain aspects of the present disclosure generally relate to techniques for puncturing of structured low-density parity-check (LDPC) codes. Certain aspects of the present disclosure generally relate to methods and apparatus for a high-performance, flexible, and compact LDPC code. Certain aspects can enable LDPC code designs to support large ranges of rates, blocklengths, and granularity, while being capable of fine incremental redundancy hybrid automatic repeat request (IR-HARQ) extension while maintaining good floor performance, a high-level of parallelism to deliver high throughout performance, and a low description complexity.
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Patent Agency Ranking
公开(公告)号：US11018804B2
公开(公告)日：2021-05-25
申请号：US16467463
申请日：2017-12-07
Applicant: Qualcomm Incorporated
Inventor： Jing Jiang , Gabi Sarkis , Yang Yang , Shrinivas Kudekar , Joseph Binamira Soriaga , Hari Sankar , Changlong Xu , Chao Wei
Abstract: Methods, systems, and devices for encoding and decoding are described. To encode a vector, an encoder allocates information bits of the vector to channel instances of a channel that are separated into groups. The groups may vary in size and allocation of the information bits is based on a base sequence of a given length. During decoding, a decoder assigns different bit types to channels instances by dividing a codeword into a plurality of groups and assigning bit types to channel instances of the plurality of groups using the base sequence.
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公开(公告)号：US20200099469A1
公开(公告)日：2020-03-26
申请号：US16467463
申请日：2017-12-07
Applicant: Jing JIANG , Gabi SARKIS , Yang YANG , Shrinivas KUDEK , Josph Binamira SORIAGA , Hari SANKAR , Changlong XU , Chao WEI , Shrinivas KUDEKAR , Qualcomm Incorporated
Inventor： Jing Jiang , Gabi Sarkis , Yang Yang , Shrinivas Kudekar , Joseph Binamira Soriaga , Hari Sankar , Changgiong Xu , Chao Wei
IPC: H04L1/00
Abstract: Methods, systems, and devices for encoding and decoding are described. To encode a vector, an encoder allocates information bits of the vector to channel instances of a channel that are separated into groups. The groups may vary in size and allocation of the information bits is based on a base sequence of a given length. During decoding, a decoder assigns different bit types to channels instances by dividing a codeword into a plurality of groups and assigning bit types to channel instances of the plurality of groups using the base sequence.
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公开(公告)号：US10595311B2
公开(公告)日：2020-03-17
申请号：US15394074
申请日：2016-12-29
Applicant: QUALCOMM Incorporated
Inventor： Piyush Gupta , Shrinivas Kudekar , Junyi Li
Abstract: Aspects of the disclosure relate to a sidelink signal communication scheme that provides for rapid adaptation of the sidelink transmission based on feedback received during each transmission time interval (TTI). In this way, any lack of precision in interference measurements, or rapid changes in the amount of interference, which otherwise might cause a modulation and coding scheme (MCS) that was selected for the sidelink transmission to be unsuitable, may be adapted to improve the reliability of the transmission. Other aspects, embodiments, and features are also claimed and described.
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公开(公告)号：US10560118B2
公开(公告)日：2020-02-11
申请号：US15943624
申请日：2018-04-02
Applicant: QUALCOMM Incorporated
Inventor： Joseph Binamira Soriaga , Gabi Sarkis , Shrinivas Kudekar , Thomas Richardson , Vincent Loncke
Abstract: Aspects of the present disclosure relate to low density parity check (LDPC) coding utilizing LDPC base graphs. Two or more LDPC base graphs may be maintained that are associated with different ranges of overlapping information block lengths. A particular LDPC base graph may be selected for an information block based on the information block length of the information block. Additional metrics that may be considered when selecting the LDPC base graph may include the code rate utilized to encode the information block and/or the lift size applied to each LDPC base graph to produce the information block length of the information block.
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40.发明授权公开(公告)号：US10469104B2
公开(公告)日：2019-11-05
申请号：US15622019
申请日：2017-06-13
Applicant: QUALCOMM Incorporated
Inventor： Shrinivas Kudekar , Thomas Joseph Richardson
Abstract: Certain aspects of the present disclosure generally relate to techniques for compactly describing lifted low-density parity-check (LDPC) codes. A method for wireless communications by a transmitting device is provided. The method generally includes selecting a first lifting size value Z and a first set of lifting values for generating a first lifted LDPC code; generating the first lifted LDPC code by applying the first set of lifting values to interconnect edges in Z copies of a base parity check matrix (PCM) having a first number of base variable nodes and a second number of base check nodes to obtain a first lifted PCM corresponding to the first lifted LDPC code; determining a second set of lifting values for generating second lifted PCM corresponding to a second lifted LDPC code for a second lifting size value based on the first lifted PCM and the first set of lifting values; encoding a set of information bits based on at least one of: the first lifted LDPC code or the second lifted LDPC code to produce a code word; and transmitting the code word.
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