单载波频域均衡系统的一种新型导频方案  

A New Method of Pilot Arrangement for SC-FDE Systems

作　　者：施婷婷[1] 周世东[1] 姚彦[1] 

机构地区：[1]清华大学电子工程系微波与数字通信国家重点实验室,北京100084

出　　处：《电子学报》2004年第F12期109-113,共5页Acta Electronica Sinica

基　　金：国家自然科学基金 (No .90 2 0 4 0 0 1 ) ;国家 863计划 (No .2 0 0 1AA1 2 30 1 2 )

摘　　要：本文提出了一种全新的适合于单载波频域均衡系统信道估计的导频方案 ,并分析了其性能 .方案通过哈达玛变换和交织实现导频插入 ,使得导频部分与数据部分即使在多径信道中也无相互间的串扰 ,从而便于用简便的方法获得准确的信道参数估计 .理论分析和仿真结果表明 ,本文提出的方案系统开销较小 ,实现简单 ,且性能良好 ,有助于在多径时变无线信道中实现高效率的数据传输 .This paper proposes a new method of pilot arrangement for channel estimation in Single-Carrier modulation with Frequency Domain Equalization (SC-FDE) systems,and analyzes its performance.The new method,which is based on Hadamard transform and interleaver,can eliminate cross interference between pilot and data part in severe multipath environment,and can achieve accurate channel parameters easily.Theoretical analyses and simulation results show that this scheme with low overhead and low implementation complexity has good performance in channel estimation,and it is suitable for mobile transmission with high spectrum efficiency even in time-varying multipath channel.

关 键 词：信道估计 导频 单载波 频域均衡 

分 类 号：TN929[电子电信—通信与信息系统]