Encoding for digital communications in a multiple-input,...

Details Encoding for digital communications in a multiple-input,... Encoding for digital communications in a multiple-input,...

2006-08-16

2010-02-23

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Spread spectrum

C375S134000, C375S137000, C375S145000, C375S246000, C375S253000

Reexamination Certificate

active

07668224

ABSTRACT:
Transceiver circuitry for use in a multiple-input, multiple-output (MIMO), orthogonal frequency-division multiplexing (OFDM), communications environment, is disclosed. Error correction coding according to a fixed-block size code, such as low density parity check (LDPC) coding, is implemented. The codeword length, and codeword arrangement, are selected by determining a minimum number of OFDM symbol periods required for a payload size, and the number of available information bits in those symbol periods. A rule-based approach, for example in a table, is used to select the codeword length, and the number of codewords required. Shortening is then applied to the code, followed by determining whether puncturing or repeating of bits is necessary to efficiently use the available OFDM symbols.

REFERENCES:
patent: 5987066 (1999-11-01), Kojima et al.
patent: 7352793 (2008-04-01), Welborn et al.
patent: 2002/0150167 (2002-10-01), Demjanenko et al.
patent: 2004/0034828 (2004-02-01), Hocevar
patent: 2004/0148560 (2004-07-01), Hocevar
patent: 2004/0194007 (2004-09-01), Hocevar
patent: 2006/0036926 (2006-02-01), Hocevar
patent: 2006/0123277 (2006-06-01), Hocevar
Tanner et al., “A Class of Group-Structured LDPC Codes”, ISTCA-2001 Proceedings (Ambleside, England, 2001). Include pertinent page(s).

Affiliated with

Also associated with

Rating

Encoding for digital communications in a multiple-input,... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Encoding for digital communications in a multiple-input,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Encoding for digital communications in a multiple-input,... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4180620