Ordered decoding in wireless communications that utilize...

Details Ordered decoding in wireless communications that utilize... Ordered decoding in wireless communications that utilize...

2006-08-29

2006-08-29

Ghebretinsae, Temesghen (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

C375S349000, C375S299000

Reexamination Certificate

active

07099414

ABSTRACT:
In a wireless communication receiver (31) of a wireless communication system that utilizes transmit diversity and turbo coding, symbol decisions are based at least in part on a posteriori probabilities (47, 48) produced by SISO decoders (35, 36). These probabilities are produced iteratively in alternating fashion to support the symbol decision process. The SISO decoder associated with the weakest (92) wireless communication channel goes first (93) in the iterative process.

REFERENCES:
patent: 6584593 (2003-06-01), Seshadri et al.
patent: 6671338 (2003-12-01), Gamal et al.
Wang et al. Iterative (Turbo) Soft Interference Cancellation and Decoding for Coded CDMA. IEEE Transactions on Communications, vol. 47, No. 7, Jul. 1999.
Everest Huang, Alan Gatherer, Tarik Muharemovic, Dale Hocevar, “Improving Performance of a Space-Time Turbo Code in a Rayleigh Fading Channel”, IEEE VTC Oct. 7, 2001.
S. Benedetto, D. Divsalar, G. Montorsi, and F. Pollara, “A Soft-Input Soft-Output APP Module for Iterative Decoding of Concatenated Codes,”IEEE Communications Letters, vol. 1, No. 1, pp. 22-24, Jan. 1997.
X. Li and J. A. Ritcey, “Bit-interleaved coded modulation with iterative decoding using soft feedback,”Electronic Letters, vol. 34, pp. 169-171, Mar. 4, 1998.
Y. Liu, M. P. Fitz, and O. Y. Takeshita, “Qpsk space-time turbo codes,” inIEEE ICC, Jun. 2000 (5 pages).

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