US2010174964A1PendingUtilityA1

Systems and methods for a turbo low-density parity-check decoder

Assignee: QUALCOMM INCPriority: Aug 3, 2005Filed: Jul 7, 2009Published: Jul 8, 2010
Est. expiryAug 3, 2025(expired)· nominal 20-yr term from priority
Inventors:Ismail Lakkis
H03M 13/635H03M 13/116H03M 13/6516H03M 13/1137H03M 13/118H03M 13/114
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Claims

Abstract

A method for forming a plurality of parity check matrices for a plurality of data rates for use in a Low-Density Parity-Check (LDPC) decoder, comprises establishing a first companion exponent matrix corresponding to a first parity check matrix for a first data rate, and partitioning the first parity check matrix and the first companion exponent matrix into sub-matrices such that the first parity check matrix is defined using a cyclical shift of an identity matrix.

Claims

exact text as granted — not AI-modified
1 . A method for forming a plurality of parity check matrices for a plurality of data rates for use in a Low-Density Parity-Check (LDPC) decoder, comprising:
 establishing a first companion exponent matrix corresponding to a first parity check matrix for a first data rate; and   partitioning the first parity check matrix and the first companion exponent matrix into sub-matrices, wherein the first parity check matrix is defined using a cyclical shift of an identity matrix.

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