低莱斯因子信道分集接收技术研究  

Research on low rice factor channel diversity technology

作　　者：张志勇[1] 刘志镜[1] 梁进波[2] 

机构地区：[1]西安电子科技大学,陕西西安710071 [2]中国电子科技集团公司第54研究所,河北石家庄050081

出　　处：《无线电通信技术》2006年第5期62-64,共3页Radio Communications Technology

摘　　要：由于低莱斯因子信道存在着多径传播,在信道上经多径传播后的接收信号是衰减和时延都随时间变化的各路径信号的合成,所以接收信号会发生衰落和产生码间干扰。针对低莱斯因子信道中衰落和码间干扰的影响,提出了带内三重频率分集接收实现方式,给出了采用带内三重频率分集的调制器和解调器的原理框图。最后对调制解调器进行了性能测试,并得到了比较理想的实验结果。As multi-path propagation exists on low Rice factor channel, the received signal is a compound signal with time attenuation and propagation delay, fading and ISI （inter-symbol interference） will occur on the received signals. For the influence of fading and ISI on low Rice factor channel, the system adopting diversity technology is presented, and the schematic diagram of the modem adopting diversity technology is given. Finally, the excellent performances of this system are tested, and relative ideal test result is obtained.

关 键 词：莱斯因子 衰落 码间干扰 分集接收 

分 类 号：TN92[电子电信—通信与信息系统]