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Wireless Personal Communications
Published in: Wireless Personal Communications 2/2014

01-09-2014

Improved Turbo Decoding Using Soft Combining Principle

Authors: Salima El Makhtari, Mohamed Moussaoui, Hassan Samadi

Published in: Wireless Personal Communications | Issue 2/2014

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Abstract

One great challenge in wireless communication systems is to ensure reliable communications. Turbo codes are known by their interesting capabilities to deal with transmission errors. In this paper, we present a novel turbo decoding scheme based on soft combining principle. Our method improves decoding performance using soft combining technique inside the turbo decoder. Working on Max-Log-Maximum a Posteriori (Max-Log-MAP) turbo decoding algorithm and using an Additive White Gaussian Noise (AWGN) channel model and 16 Quadrature Amplitude Modulation (16QAM), simulation results show that the suggested solution is efficient and outperforms the conventional Max-Log-MAP algorithm in terms of Bit Error Rate (BER). The performance analysis is carried out in terms of BER by varying parameters such as the Energy per bit to Noise power spectral density ratio (\(\text {E}_{\text {b}}/\text {N}_{\text {o}}\)), and decoding iterations number. We call our proposed solution Soft Combined Turbo Codes.
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Metadata
Title
Improved Turbo Decoding Using Soft Combining Principle
Authors
Salima El Makhtari
Mohamed Moussaoui
Hassan Samadi
Publication date
01-09-2014
Publisher
Springer US
Published in
Wireless Personal Communications / Issue 2/2014
Print ISSN: 0929-6212
Electronic ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-014-1805-0

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