High performance, flexible, and compact low-density parity-check (ldpc) code
AssigneeQUALCOMM Incorporated
InventorsThomas Joseph RICHARDSON, Shrinivas KUDEKAR
Life of this patent
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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.
Claims34
A method for wireless communication, comprising:
- selecting a base graph, of a set of base graphs, for encoding information bits for transmission at one or more transmission rates in a range of transmission rates, the base graph selected based at least in part on a highest transmission rate in the range of transmission rates, each base graph of the set of base graphs associated with a family of lifted low-density parity-check (LDPC) codes;
- encoding the information bits using at least one lifted LDPC code from the family of lifted LDPC codes associated with the base graph for transmission at the one or more transmission rates to produce one or more code words;
- and
- transmitting the one or more code words over a medium.
An apparatus for wireless communication, comprising:
- at least one processor coupled with a memory and configured to:
- select a base graph, of a set of base graphs, for encoding information bits for transmission at one or more transmission rates in a range of transmission rates, the base graph selected based at least in part on a highest transmission rate in the range of transmission rates, each base graph of the set of base graphs associated with a family of lifted low-density parity-check (LDPC) codes;
- and
- encode the information bits using at least one lifted LDPC code from the family of lifted LDPC codes associated with the base graph for transmission at the one or more transmission rates to produce one or more code words;
- and
- a transmitter configured to transmit the one or more code words over a medium.
An apparatus for wireless communication, comprising:
- means for selecting a base graph, of a set of base graphs, for encoding information bits for transmission at one or more transmission rates in a range of transmission rates, the base graph selected based at least in part on a highest transmission rate in the range of transmission rates, each base graph of the set of base graphs associated with a family of lifted low-density parity-check (LDPC) codes;
- means for encoding the information bits using at least one lifted LDPC code from the family of lifted LDPC codes associated with the base graph for transmission at the one or more transmission rates to produce one or more code words;
- and
- means for transmitting the one or more code words over a medium.
A computer readable medium having computer executable code stored thereon for wireless communication, comprising:
- code for selecting a base graph, of a set of base graphs, for encoding information bits for transmission at one or more transmission rates in a range of transmission rates, the base graph selected based at least in part on a highest transmission rate in the range of transmission rates, each base graph of the set of base graphs associated with a family of lifted low-density parity-check (LDPC) codes;
- code for encoding the information bits using at least one lifted LDPC code from the family of lifted LDPC codes associated with the base graph for transmission at the one or more transmission rates to produce one or more code words;
- and
- code for transmitting the one or more code words over a medium.
Dependencies are inferred from the claim text.