TC/MAX码捕获准则及其在超宽带系统中的应用  

On the TC/MAX criterion for code acquisition and its application to UWB systems

作　　者：王江[1] 毕光国[1] 张在琛[1] 

机构地区：[1]东南大学移动通信国家重点实验室,江苏南京210096

出　　处：《通信学报》2005年第10期46-52,共7页Journal on Communications

基　　金：国家"863"计划资助项目(2005AA123320);国家自然科学基金资助项目(60496311);江苏省自然科学基金(BK2005409)

摘　　要：针对码捕获中门限设置的复杂性,提出了一种过门限捕获与选取最大值相结合的码捕获准则(简称TC/MAX准则),并将此准则应用于直扩超宽带通信系统码的捕获。理论分析和计算机仿真表明,采用TC/MAX准则可获取比过门限捕获更好的捕获性能。Due to the difficulty of threshold setting in code acquisition, a new hybrid criterion called TC/MAX （threshold crossing/maximum selection） was presented for code acquisition. To test the proposed criterion, the general formulation was applied to the particular case of ultra wide bandwidth （UWB） communication systems. Analysis and simulation show that the proposed scheme can improve the probability of detection significantly, compared with TC criterion.

关 键 词：扩频通信 码捕获 TC/MAX准则 超宽带通信 捕获概率 

分 类 号：TN929.5[电子电信—通信与信息系统]