EBPSK-MODEM的抗单径瑞利衰落算法  

Anti-Single Path Rayleigh Fading Algorithm Based on EBPSK-MODEM

作　　者：张陈梅 吴乐南[1] 

机构地区：[1]东南大学信息科学与工程学院,江苏南京

出　　处：《无线通信》2015年第4期75-82,共8页Hans Journal of Wireless Communications

基　　金：国家自然科学基金资助项目(No.61271204);国家十二五科技支撑计划资助项目(No.2012BAH15B00)。

摘　　要：扩展的二元相移键控(Extended Binary Phase Shift Keying, EBPSK)是一种高效调制方式,针对冲击滤波器可将EBPSK调制信息转化为幅度冲击的特点并引入插值思想,本文提出了两种抗单径瑞利衰落算法:插值估计衰落因子和插值估计判决门限。仿真结果表明,这两种算法对EBPSK-MODEM系统的性能均有不同程度改善,其中以插值估计判决门限算法对系统的性能改善效果优于插值估计衰落因子算法。Extended Binary Phase Shift Keying (EBPSK) is an efficient modulation mode. According to the characteristic that the impacting filter based demodulator would transform the EBPSK modulating signal into impact amplitude, and the interpolation thought, two new anti-single path Rayleigh fading algorithms aimed at EBPSK-MODEM scheme are put forward, which are interpolation algo-rithm estimating fading factor and interpolation algorithm estimating the decision threshold. The simulation results show that the two algorithms improve the performance of EBPSK-MODEM sys-tems to varying degrees. Among them, the performance of the interpolation algorithm estimating decision threshold is slightly better than interpolation algorithm estimating fading factor.

关 键 词：EBPSK-MODEM 单径瑞利衰落信道 冲击滤波器 插值估计判决门限算法 插值估计衰落因子算法 

分 类 号：TN91[电子电信—通信与信息系统]