Results 231 to 240 of about 4,772 (272)

A Hybrid Decoder for Block Turbo Codes

IEEE Transactions on Communications, 2009
We propose a novel iterative decoder for block turbo codes (BTCs). The proposed decoder combines soft-input/softoutput (SISO) and hard-input/hard-output (HIHO) constituent decoders in order to obtain better error performance and reduce the computational complexity compared to classical BTC decoders. We show that the new decoder, called 'hybrid decoder',
Al-Dweik A, le Goff SY, Sharif B
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Reduced-search SOVA for block turbo codes

IEEE International Conference on Communications, 2003. ICC '03., 2004
In this paper, we propose an efficient reduced-search SOVA (soft output Viterbi algorithm) for block turbo codes. To reduce complexity, the decoder selects a part of the existing paths using the statistics of the path metrics. In addition, we compensate for the performance degradation incurred from soft output values at the parity part of the trellis ...
null Sooyoung Kim, null Deock-gil Oh
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Adaptive reliability calculation for block turbo codes

2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484), 2003
This work introduces an adaptive method for reliability calculations in iterative decoding. This new method is significant in particular to the class of early termination soft decision decoding algorithms, where instead of relying on approximate calculations to determine the required number of competing codewords, the proposed method determines ...
A. Mahran, M. Benaissa
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Block turbo codes for magnetic recording channels

2000 IEEE International Conference on Communications. ICC 2000. Global Convergence Through Communications. Conference Record, 2002
Block turbo codes have been shown to have near-optimum performance and lower decoding complexity than convolutional turbo codes for additive white Gaussian noise (AWGN) channels. In this paper we discuss the applicability of block turbo codes to partial-response (PR) equalized Lorentzian channels for magnetic recording.
null Hongxin Song, J.R. Cruz
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Turbo block codes using modified Kaneko's algorithm

MILCOM 2000 Proceedings. 21st Century Military Communications. Architectures and Technologies for Information Superiority (Cat. No.00CH37155), 2002
An efficient soft-input-soft-output (SISO) iterative decoding method using Kaneko's algorithm for block turbo codes (BTCs) is proposed. Hard outputs are converted to soft-decisions using reliability calculations. The algorithm presents a major advantage over the existing decoding algorithms for BTCs by providing ample flexibility in terms of ...
S. Dave, null Junghwan Kim, S.C. Kwatra
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Trellis Decoding of Linear Block Codes, Turbo Codes

2016
During the “long” history of error control coding, especially taking into account that the proof of the Second Shannon theorem is not a “constructive” one, the search for constructive codes to approach the “promised” limits have taken a long period of time.
Predrag Ivaniš, Dušan Drajić
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Block Turbo Codes: From Architecture to Application

2006 IEEE International Symposium on Information Theory, 2006
This paper is concerned with the design of block turbo codes for very high bit rate applications. We first introduce an original low-complexity architecture designed for the iterative decoding of product codes. The implementation of the Chase-Pyndiah algorithm is simplified by not memorizing any of the list decoding concurrent code words.
B. Geller, I. Diatta, J. Barbot, C. Vanstraceele, F. Rambeau   +4 more
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Block turbo codes: ten years later

IEE Seminar on Sparse-Graph Codes (Turbo Codes, Low Density Parity-Check Codes and Fountain Codes), 2004
The BTC (block turbo code) was introduced at Globecom in 1994. Since then, there have been many improvements which are disseminated in different papers. This paper aims at giving a global view of the BTC technology ten years after its introduction. After recalling the major concepts involved in BTC, we provide a global view of the implementation issues
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Enhanced Space-Time Block Coded Systems by Concatenating Turbo Product Codes

IEEE Communications Letters, 2004
The BER performance of a turbo product code (TPC) based space-time block coding (STBC) wireless system has been investigated. With the proposed system, both the good error correcting capability of TPC and the concurrent large diversity gain characteristic of STBC can be achieved. The BER upper bound has been derived taking BPSK modulation as an example.
null Yinggang Du, null Kam Tai Chan
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Partition turbo decoding of linear block codes

10th International Conference on Telecommunications, 2003. ICT 2003., 2003
Turbo codes, due to their novel coding and decoding techniques and remarkable performance, have attracted considerable interest since 1993. Especially, the turbo decoding principle has been successfully applied to solve many problems in digital communications.
null Dian-Wu Yue, null Ha Hoang Nguyen, E. Shwedyk   +2 more
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