LDPC concatenation rules for IEEE 802.11n system with...

Details LDPC concatenation rules for IEEE 802.11n system with... LDPC concatenation rules for IEEE 802.11n system with...

2005-12-20

2009-11-17

Abraham, Esaw T (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S752000, C375S240240

Reexamination Certificate

active

07620880

ABSTRACT:
A method of concatenation for LDPC encoding in an OFDM wireless system selects codewords based on the data packet payload size, wherein the payload size is the number of transmitted information bits in octets. For low transmission rates, shortening and puncturing across all codewords within the packet is applied to minimize OFDM symbol padding. For high transmission rates, only shortening across all codewords within the packet is applied to minimize OFDM symbol padding.

REFERENCES:
patent: 6633856 (2003-10-01), Richardson et al.
patent: 6718508 (2004-04-01), Lodge et al.
patent: 6789227 (2004-09-01), De Souza et al.
patent: 6847678 (2005-01-01), Berezdivin et al.
patent: 6895547 (2005-05-01), Eleftheriou et al.
patent: 7002900 (2006-02-01), Walton et al.
patent: 7072289 (2006-07-01), Yang et al.
patent: 7173978 (2007-02-01), Zhang et al.
patent: 7213197 (2007-05-01), Jacobsen et al.
patent: 7260055 (2007-08-01), Wang et al.
patent: 7283499 (2007-10-01), Priotti et al.
patent: 7324605 (2008-01-01), Maltsev et al.
patent: 2002/0042899 (2002-04-01), Tzannes et al.
patent: 2003/0014718 (2003-01-01), De Souza et al.
patent: 2003/0126538 (2003-07-01), Mejean et al.
patent: 2004/0034828 (2004-02-01), Hocevar
patent: 2004/0098659 (2004-05-01), Bjerke et al.
patent: 2004/0141548 (2004-07-01), Shattil
patent: 2005/0034053 (2005-02-01), Jacobsen et al.
patent: 2005/0091570 (2005-04-01), Eroz et al.
patent: 2005/0283707 (2005-12-01), Sharon et al.
patent: 2005/0283708 (2005-12-01), Kyung et al.
patent: 2005/0283709 (2005-12-01), Kyung et al.
patent: 2006/0036923 (2006-02-01), Hedberg et al.
patent: 2006/0087961 (2006-04-01), Chang et al.
patent: 2006/0123241 (2006-06-01), Martinian et al.
patent: 2006/0123277 (2006-06-01), Hocevar
patent: 2006/0140294 (2006-06-01), Hottinen et al.
patent: 2007/0022352 (2007-01-01), Eroz et al.
patent: 2007/0041458 (2007-02-01), Hocevar et al.
patent: 2007/0064828 (2007-03-01), Aldana et al.
patent: 2007/0101229 (2007-05-01), Niu et al.
patent: 2008/0256426 (2008-10-01), Reid et al.
S.A. Mujtaba, “TGn Sync Proposal Technical Specification,” doc.: IEEE 802.11, 11-04-0889r44, Mar. 2005, pp. 1-164.
Kose, C.; and Edwards, B., “WWiSE Proposal: High throughput extension to the 802.11 Standard,” a contribution to IEEE 802.11, 11-05-0149r2, Mar. 2005.
Van Veen, B.D.; and Buckley, K.M., “Beamforming: a versatile approach to spatial filtering”, ASSP Magazine, IEEE, vol. 5, Iss. 2, Apr. 1988, pp. 4-24.
Barton, M., Unequal error protection for wireless ATM applications, 1996, IEEE, p. 1911-1915.
R.G. Gallager, “Low density parity check codes”, IRE Trans. Inform. Theory, Jan. 1962, vol. IT-8, pp. 21-28.
T.J. Richardson, et al., “Design of capacity-approaching irregular low-density parity-check codes”, IEEE Transactions on Information Theory, Feb. 2001, pp. 619-637, vol. 47, No. 2.
T. Zhang et al., “Joint (3, k)-regular LDPC code and decoder/encoder design”, IEEE Transactions on Signal Processing, Apr. 2004, pp. 1065-1079, vol. 52, No. 4.
Yeo et al., “Iterative decoder architectures”, IEEE Communications Magazine, IEEE, Aug. 2003, pp. 132-140, vol. 41, No. 8.
T.J. Richardson et al., “Efficient encoding of low-density parity-check codes”, IEEE Transactions on Information Theory, Feb. 2001, pp. 638-656, vol. 47, No. 2.
Chung et al., “Analysis of sum-product decoding of low-density parity-check codes using a Gaussian approximation”, IEEE Transactions on Information Theory, Feb 2001, pp. 657-670, vol. 47, No. 2.
Hu et al., “Progressive edge-growth Tanner graphs”, IEEE Globecom 2001, pp. 995-1001.
Mackay et al., “Near Shannon limit performance of low density parity check codes,” Electronics Letters, Mar. 13, 1997, p. 457-458, vol. 33, No. 6.
Mujtaba, S.A., “TGN Sync Proposal Technical Specification,” doc.: IEEE 802.11- 041889r0, Aug. 2004, pp. 1-136.
Livshitz, M., et al., “TGnSync- Shortening Puncturing—Mar. 16,” Nortel's PowerPoint presentation in LDPC subgroup a contribution for 802.11n, Mar. 16, 2005, pp. 1-14.
U.S. Office Action for U.S. Appl. No. 11/261,527 mailed on Jul. 10, 2008.
U.S. Office Action for U.S. Appl. No. 11/261,527 mailed on Mar. 16, 2009.
U.S. Office Action for U.S. Appl. No. 11/313,906 mailed on Mar. 2, 2009.
U.S. Office Action for U.S. Appl. No. 11/313,906 mailed on Aug. 18, 2008.

Affiliated with

Also associated with

Rating

LDPC concatenation rules for IEEE 802.11n system with... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with LDPC concatenation rules for IEEE 802.11n system with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and LDPC concatenation rules for IEEE 802.11n system with... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4078247