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首页> 外文期刊>International journal of communication systems >Fast turbo codes with space-time block codes in fast fading channels
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Fast turbo codes with space-time block codes in fast fading channels

机译：快速衰落信道中具有空时分组码的快速Turbo码

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In this paper, space-time block coding has been used in conjunction with Turbo codes to provide good diversity and coding gains. A new method of dividing turbo encoder and decoder into several parallel encoding and decoding blocks is considered. These blocks work simultaneously and yield a faster coding scheme in comparison to classical Turbo codes. The system concatenates fast Turbo coding as an outer code with Alamouti's G2 space-time block coding scheme as an inner code, achieving benefits associated with both techniques including acceptable diversity and coding gain as well as short coding delay. In this paper, fast fading Rayleigh and Rician channels are considered for discussion. For Rayleigh fading channels, a fixed frame size and channel memory length of 5000 and 10, respectively, the coding gain is 7.5dB and bit error rate (BER) of 10(-4) is achieved at 7dB. For the same frame size and channel memory length, Rician fading channel yields the same BER at about 4.5dB. Copyright (c) 2013 John Wiley & Sons, Ltd.
机译：在本文中，空时分组编码已与Turbo码结合使用，以提供良好的分集和编码增益。考虑一种将turbo编码器和解码器划分为几个并行编码和解码块的新方法。与传统的Turbo码相比，这些块可同时工作并产生更快的编码方案。该系统将快速Turbo编码作为外部代码，而将Alamouti的G2空时分组编码方案作为内部代码，从而获得与两种技术相关的优势，包括可接受的分集和编码增益以及较短的编码延迟。在本文中，考虑快速衰落的瑞利和里斯安信道。对于瑞利衰落信道，固定帧大小和信道存储长度分别为5000和10，编码增益为7.5dB，而误码率（BER）为7（10）。对于相同的帧大小和通道存储长度，Rician衰落通道在大约4.5dB处产生相同的BER。版权所有（c）2013 John Wiley＆Sons，Ltd.

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