Multi-mode iterative detector

Details Multi-mode iterative detector Multi-mode iterative detector

2004-08-27

2008-03-04

Odom, Curtis (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C714S746000, C714S752000, C714S758000, C714S800000, C714S801000, C714S802000, C714S803000, C714S804000, C708S530000, C708S531000

Reexamination Certificate

active

07340003

ABSTRACT:
A storage system for storing data on a storage medium includes an encoder, a linear block encoder, a write circuit, a read circuit, a channel decoder, and a soft linear block code decoder. In a first iteration, the channel decoder decodes data read by the read circuit. In succeeding iterations, the channel decoder decodes the data read by the read circuit and utilizes information decoded by the soft linear block decoder from an immediately preceding iteration. The storage system includes a threshold check circuit to select (i) an output of the soft linear block code decoder if the number of parity-check violations has a first relationship with respect to a threshold, or (ii) an output of the channel decoder if the number of violations has a second relationship with respect to the threshold. The storage system includes a decoder to decode an output of the threshold check circuit.

REFERENCES:
patent: 4295218 (1981-10-01), Tanner
patent: 4601044 (1986-07-01), Kvomer, III et al.
patent: 5537444 (1996-07-01), Nill et al.
patent: 5757821 (1998-05-01), Jamal et al.
patent: 5926232 (1999-07-01), Mangold et al.
patent: 5930272 (1999-07-01), Thesling
patent: 5933462 (1999-08-01), Viterbi et al.
patent: 5949831 (1999-09-01), Coker et al.
patent: 5974540 (1999-10-01), Morikawa et al.
patent: 5983385 (1999-11-01), Khayrallah et al.
patent: 6002716 (1999-12-01), Meyer et al.
patent: 6009549 (1999-12-01), Bliss et al.
patent: 6021518 (2000-02-01), Pelz
patent: 6023783 (2000-02-01), Divasalar et al.
patent: 6028728 (2000-02-01), Reed
patent: 6081918 (2000-06-01), Spielman
patent: 6145114 (2000-11-01), Crozier et al.
patent: 6161209 (2000-12-01), Moher
patent: 6182261 (2001-01-01), Haller et al.
patent: 6219817 (2001-04-01), Holman
patent: 6405342 (2002-06-01), Lee
patent: 6427220 (2002-07-01), Vityaev
patent: 6438180 (2002-08-01), Kavcic et al.
patent: 6539367 (2003-03-01), Blanksby et al.
patent: 6581181 (2003-06-01), Sonu
patent: 6615385 (2003-09-01), Kim et al.
patent: 6634007 (2003-10-01), Koetter et al.
patent: 6662337 (2003-12-01), Brink
patent: 6691263 (2004-02-01), Vasic et al.
patent: 6708308 (2004-03-01), De Souza et al.
patent: 6715121 (2004-03-01), Laurent
patent: 7027537 (2006-04-01), Cheong et al.
patent: 2004164767 (2004-10-01), None
patent: WO 96/37050 (1996-11-01), None
patent: WO96/37050 (1996-11-01), None
patent: WO 00/19616 (2000-04-01), None
L.H.C. Lee, Computation of the Right-Inverse of G(D) and the Left-Inverse of H′(D), Jun. 21, 1990, I.E.E.E. vol. 26, No. 13, pp. 904-906.
J. Hagenauer and P. Hoeher: “A Viterbi algorithm with soft-decision outputs and its applications,” Proc. IEEE GLOBECOM '90, Dallas, Tex., pp. 47.1.1-47.1.7, Nov. 1989.
Öberg, Mats, “Parity Check Codes for Partial Response Channels,” IEEE Global Telecommunications Conference—Globalcom '99, pp. 717-722, 1999.
U.S. Appl. No. 09/730,597, filed Dec. 7, 2000, Burd et al.
U.S. Appl. No. 09/730,752, filed Dec. 7, 2000, Burd et al.
U.S. Appl. No. 09/730,603, filed Dec. 7, 2000, Wu et al.
U.S. Appl. No. 09/730,598, filed Dec. 7, 2000, Wu et al.
U.S. Appl. No. 09/901,507, filed Jul. 9, 2001, Wu et al.
Viterbi, Andrew J., “An Intuitive Justification and a Simplified Implementation of the MAP Decoder for Convolutional Codes,” IEEE Journal on Selected Areas in Communications, vol. 16, No. 2, Feb. 1995.
MacKay, David J.C., “Good Error-Correcting Codes Based On Very Sparse Matrices,” IEEE Transactions on Information Theory, vol. 45, No. 2, Mar. 1999.
Gallager, Robert G., “Low-Density Parity-Check Codes,” M.I.T. Press, 1963.
Wu, Zining, “Coding and Iterative Detection for Magnetic Recording Channels,” The Kluwer International Series in Engineering and Computer Science, Kluwer Academic Publishers, 2000.
Shoemake and Heegard, Computationally Efficient Turbo Decoding with Bi-directional Viterbi Algorithm (BIVA), IEEE, ISIT 1997.
Wu, Zining, “Coding, Iterative Detection and Timing Recovery for Magnetic Recording Channels A Dissertation”, Aug. 1999.

Affiliated with

Also associated with

Rating

Multi-mode iterative detector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-mode iterative detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-mode iterative detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3979054