一种LTE系统中减少PDCCH盲检次数的方法  

A method to reduce PDCCH blind detect numbers used in LTE system

作　　者：李小文[1] 贾海峰[1] 

机构地区：[1]重庆邮电大学重庆市移动通信技术重点实验室,重庆400065

出　　处：《电子技术应用》2012年第4期87-89,共3页Application of Electronic Technique

基　　金：国家科技重大专项项目"TD-LTE无线综合测试仪表开发"(2009ZX03002-009)

摘　　要：重点研究了长期演进LTE(Long Term Evolution)系统的物理下行控制信道PDCCH(Physical Downlink Control Channel)盲检算法。通过对目前盲检算法的分析,提出了一种通过改变第一个搜索等级和改变选取下一搜索等级方式的改进算法。对两种算法的性能进行了仿真比较,结果表明,改进后的盲检次数比改进前的盲检次数要少,改进算法可行、有效。This paper investigated the algorithm of PDCCH blind detection in LTE system. By analyzing the current algorithm of blind detection, proposed an improved algorithm that changed the first search level and changed the method of selecting the next search level. Compared two methods performance simulation, the numbers after improved is less than before improved, the results of simulation verify that the selected algorithm is feasible and effective.

关 键 词：长期演进 盲检测 搜索空间 控制信道元素 物理下行控制信道 

分 类 号：TN929.5[电子电信—通信与信息系统]