Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Reexamination Certificate
2003-02-07
2008-12-02
Chaudry, Mujtaba K. (Department: 2112)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
C714S795000
Reexamination Certificate
active
07461322
ABSTRACT:
A communication system according to the present invention comprises a transmitter for performing low-density parity-check (LDPC) coding and a receiver for performing LDPC decoding based on the “Sum-Product algorithm”, and performing a synchronous control and a user detection by using a sum of absolute values of logarithm likelihood ratio of the posterior probability of each bit that is output as a decoding result.
REFERENCES:
patent: 5930267 (1999-07-01), Daneshrad et al.
patent: 6097716 (2000-08-01), Abrishamkar
patent: 6381723 (2002-04-01), Koyama
patent: 6985536 (2006-01-01), Oelcer et al.
patent: 6988236 (2006-01-01), Ptasinski et al.
patent: 62-193336 (1987-08-01), None
patent: 8-125640 (1996-05-01), None
patent: 8-163108 (1996-06-01), None
patent: 20-150439 (1998-06-01), None
patent: 2001-168733 (2001-06-01), None
patent: 2003-68024 (2003-03-01), None
patent: 2003-115768 (2003-04-01), None
Y. Kou et al., “Low Density Parity Check Codes Based on Finite Geometries: A Rediscovery,” ISIT 2000, pp. 200, Sorrento, Italy, Jun. 25 to 30, 2000.
M. Luby et al., “Improved Low Density Parity Check Codes Using Irregular Graphs and Belief Propagation,” Proceedings of 1998 IEEE International Symposium on Information Theory, pp. 171, Cambridge, Mass., Aug. 16 to 21, 1998.
T. Richardson et al., “The Capacity of Low-Density Parity Check Codes Under Message-Passing Decoding,” IEEE Transactions on Information Theory, vol. 47, No. 2, Feb. 2001, pp. 599-618.
S-Y. Chung, et al., “Analysis of Sum-Product Decoding of Low-Density Parity-Check Codes Using a Gaussian Approximation,” IEEE Transactions on Information Theory, vol. 47, No. 2, pp. 657-670, Feb. 2001.
Yeo et al., “High Throughout Low-Density Parity-Check Decoder Architectures”, Global Telecommunication conference, vol. 5 of 6, pp. 3019-3024 (Nov. 2001).
Ahmed et al., Institute Of Electrical and Electronics Engineers, “Block-size estimation and application to BTFD for 3GPP UMTS” vol. 5 of 6, pp. 3045-3049, (Nov. 2001).
Del-toso et al., “Standard compliatn VDSL: a flexible and efficient solution for EFM over Copper” Internet Article, (Jul. 2001).
Sohn et al., “Blind Rate Detection Algorithm in WCDMA Mobile Receiver” Vehicular Technology Conference, vol. 1 of 4, pp. 1589-1592 (Oct. 7, 2001).
IBM “G.gen: LDPC codes for G. dmt.bis and 1-19 G. lite.bis.” Internet Article,(Jan. 2001).
Alphonse Fritz
Birch & Stewart Kolasch & Birch, LLP
Chaudry Mujtaba K.
Mitsubishi Denki & Kabushiki Kaisha
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