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Concatenation of space-time block codes and turbo product codes over Rayleigh flat fading channels

机译:瑞利平坦衰落信道上时空分组码和turbo乘积码的级联

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Space-time block codes (STBCs) are designed to obtain the maximum possible diversity gain. However, STBCs are not designed to achieve an additional coding gain [(S.M. Alamouti, Oct 1998), (V. Tarokh, July 1999)]. Therefore, STBCs need to be concatenated with an outer code which provides a significant coding gain. Turbo product codes (TPCs) are a kind of high-efficient coding scheme in high code rate, which more approach the Shannon limit than do turbo convolutional code (TCC)[Y. He et al., Nov 2003]. In this paper, we consider the concatenation of TPCs with STBCs to improve the reliability of the wireless communication systems. We combined turbo product code(64, 57, 4) as an outer code. STBCs-TPCs system with multiple-transmit and single-receive antenna (MISO) are investigated for Rayleigh flat fading channels. Simulation results show that for one system with total spectral efficiency of 0.793 bits/s/Hz, bit error rate (BER) is 0 at E/sub b//N/sub 0/ of 7 dB using 4 transmit antennas (4Tx) or at E/sub b//N/sub 0/ of 12 dB using 3Tx or at E/sub b//N/sub 0/ of 21 dB for 2Tx and that for another system with total spectral efficiency of 1.19 bits/s/Hz, BER is 0 at E/sub b//N/sub 0/ of 8 dB using 4Tx or at E/sub b//N/sub 0/ of 15 dB using 3Tx.
机译:空时分组码(STBC)旨在获得最大可能的分集增益。但是,STBC并非旨在实现额外的编码增益[(S.M. Alamouti,1998年10月),(V。Tarokh,1999年7月)]。因此,需要将STBC与提供显着编码增益的外部代码连接起来。 Turbo乘积码(TPC)是一种高编码率的高效编码方案,比Turbo卷积码(TCC)更接近香农极限[Y]。 He et al。,2003年11月]。在本文中,我们考虑将TPC与STBC连接起来,以提高无线通信系统的可靠性。我们将turbo产品代码(64、57、4)组合为外部代码。研究了具有多发射和单接收天线(MISO)的STBCs-TPCs系统用于瑞利平坦衰落信道。仿真结果表明,对于一个总频谱效率为0.793 bits / s / Hz的系统,使用4个发射天线(4Tx)时,E / sub b // N / sub 0 /为7 dB时,误码率(BER)为0。使用3Tx在E / sub b // N / sub 0 /的情况下为12 dB,对于2Tx以及在另一系统的E / sub b // N / sub 0 /的情况下为21 dB,总频谱效率为1.19 bits / s / Hz,BER在使用4Tx的E / sub b // N / sub 0 /为8 dB时为0,或者在使用3Tx的E / sub b // N / sub 0 /为15 dB时。

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