【摘要】 基于莱斯 /对数正态 (Rician/Lognormal)衰落信道传输时 ,对采用不同调制技术的误码性能进行的分析 ,以多径衰落和阴影效应复合影响的信道模型为基础 ,推导了误码率的解析表达式 ,通过大量的计算机仿真得出了最佳的调制方案。所得结论对陆地移动卫星通信系统的设计具有重要的意义更多还原

【Abstract】 Based on Rician/Lognormal fading channel, by bit error performance analysis for different modulation techniques, with consideration of the complex influence of multi path and shadowing effect in the channel, analytical mathematics expressions of bit error rate (BER) are given. The optimal modulation scheme is obtained through many computer simulations. This result is proved to be significant for the design of land satellite mobile communication system.更多还原