Results 131 to 140 of about 1,509 (176)

On turbo decoding of nonbinary codes

IEEE Communications Letters, 1998
Symbol-by-symbol maximum a posteriori (MAP) decoding algorithms for nonbinary block and convolutional codes over an extension field GF(p/sup a/) are presented. Equivalent MAP decoding rules employing the dual code are given which are computationally more efficient for high-rate codes.
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Energy-efficient turbo decoder

IEEE International Conference on Acoustics Speech and Signal Processing, 2002
Turbo codes have been recently adopted in the next generation of wideband CDMA standards. These codes achieve superior performance at the expense of high computational complexity. This makes their low energy implementation a very important yet challenging problem.
Jagadeesh Kaza, Chaitali Chakrabarti
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Optimality and Duality of the Turbo Decoder

Proceedings of the IEEE, 2007
The near-optimal performance of the turbo decoder has been a source of intrigue among communications engineers and information theorists, given its ad hoc origins that were seemingly disconnected from optimization theory. Naturally one would inquire whether the favorable performance might be explained by characterizing the turbo decoder via some ...
Phillip A. Regalia, John MacLaren Walsh
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Convergence and errors in turbo-decoding

Proceedings. 2001 IEEE International Symposium on Information Theory (IEEE Cat. No.01CH37252), 2001
Summary: Turbo-codes are decoded using iterative decoding algorithms with somewhat elusive convergence properties. In this paper, the modes of convergence observed in an extensive series of turbo-code simulations are categorized by examining the bit convergence behavior for each frame.
Andrew C. Reid, T. Aaron Gulliver, Desmond P. Taylor   +2 more
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Stochastic models for turbo decoding

IEEE International Conference on Communications, 2005. ICC 2005. 2005, 2005
This paper proposes a stochastic framework for modelling and analysis of turbo decoding. By modelling the input and output signals of a turbo decoder as random processes, we prove that these signals become ergodic when the code block size becomes very large.
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Turbo decoder

IEEE Communications Letters, 2000
Wangrok Oh, Kyungwhoon Cheun
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Parallel Decoding of Turbo Codes

2018
Given a turbo code generated by parallelly concatenated recursive systematic convolutional encoders, the turbo decoder comprises MAP decoders coupled in a serial connection, where each MAP decoder decodes a recursive systematic convolutional code. We propose a turbo decoding algorithm that, on a logical level of abstraction, is made of several turbo ...
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Turbo Decoding

1999
Chris Heegard, Stephen B. Wicker
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Two simple stopping criteria for turbo decoding

IEEE Transactions on Communications, 1999
M P C Fossorier
exaly  

Bi-directional SOVA decoding for turbo-codes

IEEE Communications Letters, 2000
M P C Fossorier
exaly