Method of calculating internal signals for use in a map...

Details Method of calculating internal signals for use in a map... Method of calculating internal signals for use in a map...

2007-06-26

2007-06-26

Decady, Albert (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S769000, C714S795000

Reexamination Certificate

active

10727910

ABSTRACT:
A method of calculating internal signals for use in a MAP algorithm is disclosed, comprising the steps of:obtaining first decoding signals by processing received systematic and received encoded symbols of each symbol sequence of a received signal;obtaining unnormalized second decoding signals for the current symbol sequence by processing the first decoding signals of the previous sequence and second decoding signals of the previous sequence;obtaining unnormalized third decoding signals for the current symbol sequence by processing the first decoding signals of the current sequence and third decoding signals of the next sequence;normalizing the unnormalized second and third decoding signals; andwherein at least one of said second decoding signals of the previous sequence and said third decoding signals of the next sequence are unnormalised.

REFERENCES:
patent: 6101223 (2000-08-01), Betts
patent: 6757701 (2004-06-01), Sivan et al.
patent: 6999531 (2006-02-01), Jin
patent: 2001/0021971 (2001-09-01), Gibson et al.
patent: 2001/0031024 (2001-10-01), Petersen et al.
Berrou, et al., “Near Shannon Limit Error-Correcting Coding and Decoding:Turbo-Codes,” in Proceedings of ICC'93, Geneva, Switzerland, pp. 1064-1070, May 23-25, 1993.
Warren J. Gross and P. Glenn Gulak, Simplified MAP Algorithm Suitable for Implementation of Turbo Decoders, Department of Electrical and Computer Engineering, University of Toronto, Toronto, Canada.
Chass, et al., “Efficient Software Implementation of the Max-Log-MAP Turbo Decoder on the StarCore SC140 DSP,” Motorola Semiconductor Israel Ltd, Shenkar 1, Herzelia, Israel.
Patrick Robertson and Peter Hoeher, Optimal and Sub-Optimal Maximum a Posteriori Algorithms Suitable for Turbo Decoding, European Transactions on Telecommunications, vol. 8, No. 2, Mar.-Apr. 1997, pp. 119-125.
EG TS 25:212 V3.3.0 (Jun. 2000)), 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Multiplexing and channel coding (FDD) (Release 1999) pp. 1-62.
IEEE Transactions on Information Theory, Mar. 1974, pp. 284-287.

Affiliated with

Also associated with

Rating

Method of calculating internal signals for use in a map... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of calculating internal signals for use in a map..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of calculating internal signals for use in a map... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3839123