摘要
考虑了无线通信中广泛存在的多径信号的时延和到达角的联合估计问题。对于多径信道,提出了一种新的信号采样模型,并在此信号模型的基础上,根据 CDMA(码分多址)系统中已知的扩频码,利用传统的 MUSIC(多重信号分类法)算法联合估计多径信号的时延和到达角。所提出的方法不需要训练序列,而且步骤简化,估计精度高。计算机仿真结果表明该算法有效。
The joint estimation of time delays and DOAs of multipath signals, which is common in wireless communications, is taken into account. A new signal sample model is presented for multipath channel. Based on this model, time delays and DOAs are estimated jointly using the known CDMA codes by traditional MUSIC algorithm. The training sequence is not required and the precision of estimation is high with less computation. The simulation result shows that the presented method is feasible.
出处
《华北电力大学学报（自然科学版）》
CAS
北大核心
2004年第4期98-101,共4页
Journal of North China Electric Power University：Natural Science Edition
基金
华北电力大学博士学位青年教师科研基金资助项目.
