LDPC (low density parity check) coded signal decoding using...

Details LDPC (low density parity check) coded signal decoding using... LDPC (low density parity check) coded signal decoding using...

2011-06-07

2011-06-07

Chaudry, M. Mujtaba K (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

Reexamination Certificate

active

07958428

ABSTRACT:
LDPC (Low Density Parity Check) coded signal decoding using parallel and simultaneous bit node and check node processing. This novel approach to decoding of LDPC coded signals may be described as being LDPC bit-check parallel decoding. In some alternative embodiment, the approach to decoding LDPC coded signals may be modified to LDPC symbol-check parallel decoding or LDPC hybrid-check parallel decoding. A novel approach is presented by which the edge messages with respect to the bit nodes and the edge messages with respect to the check nodes may be updated simultaneously and in parallel to one another. Appropriately constructed executing orders direct the sequence of simultaneous operation of updating the edge messages at both nodes types (e.g., edge and check). For various types of LDPC coded signals, including parallel-block LDPC coded signals, this approach can perform decoding processing in almost half of the time as provided by previous decoding approaches.

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Hai-Gang Zhang; Dong-Feng Yuan; Pi-Ming Ma; Xiu-Mei Yang, “Low-density parity-check code (LDPC) schemes with BICM,” Communication Technology Proceedings, 2003. ICCT 2003. International Conference on vol. 2, Issue , Apr. 9-11, 2003, pp. 1148-1151 vol. 2.
Jian Sun, “An Introduction to Low Density Parity Check (LDPC) Codes,” WCRL Seminar Series, West Virginia University, Jun. 3, 2003, pp. 1-21.
Mohommad M. Mansour, “High-Performance Decoders for Regular and Irregular Repeat-Accumulate Codes,” IEEE Communications Society, IEEE Global Telecommunications Conference, Globecom 2004, vol. 4, Issue 29, pp. 2583-2588, ISBN: 7-7803-8794-5/04.
Eran Sharon, Simon Litsyn, Jacob Goldberger, “An efficient message-passing schedule for LDPC decoding,” Proceedings. 2004 23rd IEEE Convention of Electrical and Electronics Engineers in Israel, 2004, Sep. 6-7, 2004, pp. 223-226.

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