Joint Signature Vectors and DOAs Tracking for Multicarrier CDMA Systems  

作　　者：ZHANG Yiwen YIN Qinye DING Le 

机构地区：[1]School of Electronics and Information Engineering, Xi＇an Jiaotong University, Xi＇an 710049, China [2]Engineering College of CAPF, Xi＇an 710086, China

出　　处：《Chinese Journal of Electronics》2007年第2期326-330,共5页电子学报（英文版）

基　　金：This work is supported by the National Natural Science Foundation of China （No.60572046, No.60502022）.

摘　　要：A blind iterative signature vectors and Direction of arrival （DOA） estimation algorithm was derived for Multicarrier Code division multiple access （MCCDMA） system equipped with a Uniform linear array （ULA） at the base station in timevarying multipath channels. The signature vectors were estimated by alternative projecting onto intersectant subspaces. Then DOAs were obtained from the estimated signature vector. Based on the structural properties of the subspace tracking algorithm, a dimension-reduction algorithm was developed to reduce the computational burden. Compared with the reference algorithm, dimension-reduction algorithm has lower computational complexity, but achieves the same estimation performance. Simulations results demonstrate the performance of the proposed algorithm.

关 键 词：DOA （Direction of arrival） MC-CDMA （Multicarrier Code division multiple access） Projection Subspace tracking. 

分 类 号：TN914.53[电子电信—通信与信息系统]