混合卫星-地面协同网络的误符号性能

Symbol Error Performance of Hybrid Satellite-Terrestrial Cooperative Network

该文研究了直达径满足阴影莱斯分布,中继链路满足阴影莱斯/瑞利分布的混合卫星-地面协同网络的误符号性能。基于最大比合并准则,首先推导了直达径和中继链路的矩生成函数解析式。然后,计算出系统平均误符号率的理论表达式和高信噪比条件下的渐进解来分析系统的分集度和阵列增益。最后,通过仿真验证了理论分析的正确性。

This paper investigates the symbol error performance of a hybrid satellite-terrestrial cooperative relay system（HSTCS）,where the direct link experiences Shadowed-Rician fading while the relay links undergo Shadowed-Rician/Rayleigh fading.Based on maximal-ratio-combining（MRC）,analytical expressions for the moment generating function（MGF）of the direct link and relay links are obtained.Then,the theoretical formulas for average symbol error rate（ASER）and the asymptotic analysis at high SNR are presented to reveal the diversity order and array gain of the system.Finally,the effectiveness of the analytical results is verified through simulations.