Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Reexamination Certificate
2005-03-08
2005-03-08
Chase, Shelly A (Department: 2133)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
Reexamination Certificate
active
06865708
ABSTRACT:
Methods of early-termination and output selection for iterative decoders are disclosed. A hybrid early-termination method combines the output-comparison-based method with the parity-check-based method. The hybrid approach is far more superior in termination reliability in either of the two individual approaches, without their disadvantages. The hybrid termination method effectively and reliably terminates the iterative decoding process, cutting the majority of the computational load while eliminating the degradation in the bit error rate (BER) and frame-error-rate (FER) performance due to incorrectly terminated frames. An output selection procedure chooses the best possible decoded frame among those from all iterations if the iterative decoding process cannot be early-terminated during the decoding of a received frame and if the iterative decoder has reached the maximum number of iterations, thereby eliminating the iteration abnormality that is inherent in the iterative decoding approach, and improving the BER performance of the standard iterative decoders.
REFERENCES:
patent: 6182261 (2001-01-01), Haller et al.
patent: 6292918 (2001-09-01), Sindhushayana et al.
patent: 6557139 (2003-04-01), Bohnke
patent: 6591390 (2003-07-01), Yagyu
patent: 6675342 (2004-01-01), Yagyu
Matache et al., Stopping rules for turbo decoders, Aug. 2000, IMO Progress report 42-142, pp. 1-22.*
J. Hagernauer, E. Offer and L. Papke, “Interative Decoding of Binary and Convolutional Codes”, IEEE Transactions on Info. Theory, vol. 42, No. 2, pp. 429-445, Mar. 1996.
R.Y. Shao, S. Lin and M.P.C. Fossorier, “Two Simple Stopping Criteria for Turbo Decoding”, IEEE Transactions on Comm., vol. 47, No. 8, pp. 1117-1120, Aug. 1999.
A. Shibutani, H. Suda and F. Adashi, “Complexity Reduction of Turbo Decoding”, IEEE VTS 50th Vehicular Technology Conference, Amsterdam, The Netherlands, pp. 1570-1574, Sep. 1999.
Using TM5320C6416 Coprocessors: Turbo Coprocessor (TCP) Application Report. p. 9, Texas Instruments, Jun. 2001.
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