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Optimized BER Performance of Asymmetric Turbo Codes over AWGN Channel

by M. Srinivasa Rao, G. Vijaya Kumar, P. Rajesh Kumar
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 81 - Number 12
Year of Publication: 2013
Authors: M. Srinivasa Rao, G. Vijaya Kumar, P. Rajesh Kumar
10.5120/14062-2225

M. Srinivasa Rao, G. Vijaya Kumar, P. Rajesh Kumar . Optimized BER Performance of Asymmetric Turbo Codes over AWGN Channel. International Journal of Computer Applications. 81, 12 ( November 2013), 8-12. DOI=10.5120/14062-2225

@article{ 10.5120/14062-2225,
author = { M. Srinivasa Rao, G. Vijaya Kumar, P. Rajesh Kumar },
title = { Optimized BER Performance of Asymmetric Turbo Codes over AWGN Channel },
journal = { International Journal of Computer Applications },
issue_date = { November 2013 },
volume = { 81 },
number = { 12 },
month = { November },
year = { 2013 },
issn = { 0975-8887 },
pages = { 8-12 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume81/number12/14062-2225/ },
doi = { 10.5120/14062-2225 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T21:55:51.862839+05:30
%A M. Srinivasa Rao
%A G. Vijaya Kumar
%A P. Rajesh Kumar
%T Optimized BER Performance of Asymmetric Turbo Codes over AWGN Channel
%J International Journal of Computer Applications
%@ 0975-8887
%V 81
%N 12
%P 8-12
%D 2013
%I Foundation of Computer Science (FCS), NY, USA
Abstract

The performance of the turbo codes can be improved by varying parameters such as block size, code polynomial structure and constraint length. This paper proposes a new asymmetric turbo codes that consists of parallel concatenated component codes with mixed type generator polynomials and also different constraint lengths. This scheme optimizes the BER performance of asymmetric turbo codes of both Water-fall region at lower SNR's and error-floor region at higher SNR's. The simulation results shows better BER performance of asymmetric turbo codes for block size of 128, 512 bits, code-rate of 1/2 and Maximum-A-Posteriori (MAP) decoding algorithm over AWGN channel with BPSK modulation by using MATLAB.

References
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Index Terms

Computer Science
Information Sciences

Keywords

Asymmetric turbo codes bit error rate constraint length code-rate error-floor and waterfall.

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