多径衰落信道下BOC信号捕获性能分析  

Analysis of BOC signal acquisition performance in multipath fading channels

作　　者：潘毅[1] 张天骐[1] 李军伟[1] 杨超三[1] 

机构地区：[1]重庆邮电大学信号与信息处理重庆市重点实验室,重庆400065

出　　处：《光通信研究》2013年第5期67-70,共4页Study on Optical Communications

基　　金：国家自然科学基金资助项目(61071196;61102131);教育部新世纪优秀人才支持计划项目(NCET-10-0927);信号与信息处理重庆市市级重点实验室建设项目(CSTC2009CA2003);重庆市杰出青年基金资助项目(CSTC2011jjjq40002);重庆市自然科学基金资助项目(CSTC2010BB2398;CSTC2010BB2409;CSTC2010BB2411;CSTC2012JJA40008);重庆市教育委员会科研项目(KJ120525)

摘　　要：针对多径衰落信道下BOC(二进制偏移载波)信号的捕获问题,通过对多径衰落信道建模,运用目前较优越的捕获算法对各信道下的捕获性能进行比较。结合莱斯因子K、多径径数L以及多径延迟,分析了多径衰落信道对BOC信号捕获产生的影响。理论分析和仿真结果表明,K值越大,捕获函数峰值越大,捕获性能越好;L值越小,出现副峰越少,捕获性能越好。This paper discusses the acquisition of BOC signals in multipath fading channels.It first compares the acquisition performances in various channels using the currently superior acquisition algorithm on the basis of the models of multipath fa-ding channels.Then it analyzes the impacts of the channels on the acquisition performances in connection with Rice factor K, multipath routing number L and multipath delay.Theoretical analysis and simulation results show that the larger the Rice fac-tor K,the larger the acquisition function peak value and the better the acquisition performance,while the smaller the multipath routing number L,the less the side peaks and the better the acquisition performance.

关 键 词：BOC信号 捕获 多径衰落信道 莱斯因子 多径径数 

分 类 号：TN914.42[电子电信—通信与信息系统]