Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Reexamination Certificate
2005-01-21
2009-06-16
Torres, Joseph D (Department: 2112)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
C714S795000
Reexamination Certificate
active
07549113
ABSTRACT:
A turbo decoding method is capable of realizing high-speed and highly accurate decoding operations by improving initialization of path metric values for parallel decoding processing. Turbo encoded code data is divided into a first to an N-th sub-code blocks and parallel decoding processing on these sub-code blocks is performed. “A priori initialization processing unit” s are provided which employ a final calculated value in a preceding sub-code block as an initial value for calculation of a path metric value of each sub-code block excluding the first sub-code block in a forward direction and a final calculated value in a following sub-code block as an initial value for calculation of a path metric value of each sub-code block excluding the N-th sub-code block in a backward direction. After the a priori initialization processing of path metric values, parallel decoding processing on each sub-code block is performed.
REFERENCES:
patent: 6950476 (2005-09-01), Tarrab et al.
patent: 6996765 (2006-02-01), Wolf et al.
patent: 7191377 (2007-03-01), Berens et al.
J. Dielissen et al., “State vector reduction for initialization of sliding windows MAP”, 2ndInternational Symposium on Turbo Codes & Related Topics, Sep. 4, 2000, XP009039864, pp. 387-390.
Reuven Dobkin et al., “Parallel VLSI Architecture for MAP Turbo Decoder”, Internet article, Feb. 24, 2002, XP002326200, pp. 1-11.
Yuping Zhang et al., “Parallel Turbo Decoding”, Circuits and Systems, Proceedings of the 2004 International Symposium in Vancouver, BC, Canada May 23-26, 2004, IEEE, vol. 2, XP010720217, pp. 509-512.
Zhongfeng Wang et al., “Area-Efficient High Speed Decoding Schemes for Turbo/Map Decoders”, Internet article, IEEE, Dec. 2002, XP002326253, pp. 2633-2636.
Andrew J. Viterbii, “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. 1998, pp. 260-264.
Seokhyun Yoon, “A Parallel MAP Algorithm for Low Latency Turbo Decoding”, IEE Communications Letters, vol. 6, No. 7, Jul. 2002, pp. 288-290.
NEC Corporation
Torres Joseph D
Young & Thompson
LandOfFree
Turbo decoder, turbo decoding method, and operating program... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Turbo decoder, turbo decoding method, and operating program..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Turbo decoder, turbo decoding method, and operating program... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4079473