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中文摘要：
该文提出了一种基于信道编码和分布式空时分组码级联下的两用户协作分集方案，并且在准静态的瑞利衰落信道下对此方案的系统容量，中断概率以及误比特率进行了理论推导和系统仿真，分别给出了解析表达式和数值结果。通过将信道编码和空时码引入到协作分集中，系统容量得到显著改善，同时中断概率也明显降低。在协作用户间信道存在噪声的情况下，对卷积码与分布式空时分组码级联下的发射方案进行了性能分析和仿真。仿真结果表明：即使协作用户间的信道存在噪声，该文所提方案在各方面都优于传统协作分集，系统容量明显增大，中断概率及误比特率大大降低。
英文摘要：
A novel two-user cooperative diversity scheme based on concatenated channel code and distributed space-time block code is proposed in this paper, and the close form expression and numerical results of channel capacity, outage probability and bit error rate for the quasi-static rayleigh fading channels are also presented by theoretical derivation and system simulation. Through integrating with channel coding and space-time coding, system capacity has been greatly enlarged, and the outage probability is distinctly reduced also. The performance analysis and simulation for the transmitted scheme, which is based on concatenated convolution code and distributed space-time block code under the interuser channel is noisy, is carried out exhaustively. Numerical results show that, even though the interuser channel is noisy, the proposed scheme in this paper is better than traditional cooperative diversity in every respect, such as the channel capacity raised obviously, outage probability and bit error rate decreased greatly.
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