单发单收系统下联合解码方法的性能分析

Abstract

对于一个单发单收的无线通信系统，本文推导了联合解码法，并对其性能做出了理论的分析，得到了其成对错误概率的解析公式。基于此公式的分析表明，不用信道估计的联合解码法的性能要优于基于信道估计方法的系统性能。并且在某些特定的条件下，不发送训练序列的系统性能要优于基于训练序列的系统性能。所有的仿真证实了上述结论。 For a single-input, single-output wireless communication system, the joint decoder is derived, and its performance analysis is shown in this paper. In fact, an analytic formula of calculating pair-wise error probability (PEP) is given. Analysis based on this formula shows that the joint decoder without channel estimation outperforms decoders based on channel estimation. Moreover, it also shows that, for a fast fading channel, performance of decoder based on training is worse than the performance of decoder without training. Simulations confirm our analysis above.