带有时偏的MC-CDMA上行链路的盲信道估计  

Blind channel estimation for the uplink of MC-CDMA systems with timing offset

作　　者：吴海锋[1] 戴宪华[1] 梁建清[1] 

机构地区：[1]中山大学电子与通信工程系,广东广州510275

出　　处：《通信学报》2007年第1期8-16,共9页Journal on Communications

基　　金：国家自然科学基金资助项目(60272068)~~

摘　　要：为了能在带有时偏的MC-CDMA上行链路中估计信道,提出了一种新的信道估计方法。该方法能消除时偏对信道估计产生的影响,从而无需系统同步就能准确估计出信道。另外,由于扩频序列的信息对接收端是已知的,因此该信道估计方法可以利用扩频码的信息来完成盲估计。最后的仿真结果显示,该信道估计方法有良好的性能。A new blind channel estimation scheme was proposed for the uplink of multicarrier code-division multiple access （MC-CDMA） systems with timing offset （TO）. The scheme can cancel TO effects on the channel estimation, and thus work well without synchronizing the system. In addition, the estimation can exploit the knowledge of the spreading sequences to accomplish a blind estimation since the spreading sequences are known for the receiver. In computer simulations, the new channel estimation provides a satisfactory performance.

关 键 词：MC-CDMA 同步 时间偏差 盲信道估计 

分 类 号：TN911.7[电子电信—通信与信息系统]