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http://dx.doi.org/10.12673/jant.2011.15.6.1068

Performance Analysis of STBC System Combined with Convolution Code fot Improvement of Transmission Reliability  

Shin, Hyun-Jun (korea of University of Technology and Education)
Kang, Chul-Gyu (Korea Electronics Technology Institute)
Oh, Chang-Heon (korea of University of Technology and Education)
Publication Information
Journal of Advanced Navigation Technology / v.15, no.6, 2011 , pp. 1068-1074 More about this Journal
Abstract
In this paper, the proposed scheme is STBC(space-time block codes) system combined with convolution code which is the most popular channel coding to ensure the reliability of data transmission for a high data rate wireless communication. The STBC is one of MIMO(multi-input multi-output) techniques. In addition, this scheme uses a modified viterbi algorithm in order to get a high system gain when data is transmitted. Because we combine STBC and convolution code, the proposed scheme has a little high quantity of computation but it can get a maximal diversity gain of STBC and a high coding gain of convolution code at the same time. Unlike existing viterbi docoding algorithm using Hamming distance in order to calculate branch matrix, the modified viterbi algorithm uses Euclidean distance value between received symbol and reference symbol. Simulation results show that the modified viterbi algorithm improved gain 7.5 dB on STBC 2Tx-2Rx at $BER=10^{-2}$. Therefore the proposed scheme using STBC combined with convolution code can improve the transmission reliability and transmission efficiency.
Keywords
MIMO; STBC; Convolution code; Channel Coding; Viterbi Algorithm; Euclidean Distance;
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