中文摘要：

对于脉冲和高斯加性混合噪声环境下正交空时分组码的性能进行了研究，建立了采用最大似然译码的混合噪声多发单收近似等效模型．利用矩母函数分析方法，推导出了Rayleigh衰落信道下空时分组码误符号率闭式表达式的渐近解．对采用M-PSK和M—QAM调制方式的不同空时分组编码方案在混合噪声环境下误符号率的性能进行了分析，蒙特卡洛仿真结果与解析性能结果吻合良好．

英文摘要：

The performance of orthogonal space-time block codes （OSTBC） is investigated in the presence of an additive combination of impulsive and Gaussian noises. Based on maximum likelihood （ML） decoding, an equivalent approximate model with mixture noise is constructed for multiple input single output （MISO） systems. By using the moment generating function-based analysis approach, the closed-form expressions for the average symbol error rate （SER） of OSTBC over Rayleigh flat fading channels are derived. Furthermore, the SER performance of the STBC is analyzed for different code matrices with M-PSK and M-QAM modulations. Monte Carol simulation results show good agreement with the analyses.