Reduced-rank channel estimation and tracking in time-slotted CDMA systems

被引：0
|
作者：
Nicoli, M [1 ]
Sternad, M [1 ]
Spagnolini, U [1 ]
Ahlén, A [1 ]
机构：
[1] Politecn Milan, Dip Elettron & Informaz, I-20133 Milan, Italy
来源：
2002 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-5, CONFERENCE PROCEEDINGS | 2002年
关键词：
D O I：
10.1109/ICC.2002.996910
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper Investigates the estimation and tracking of time varying propagation channels in the uplink of a time slotted CDMA system. An antenna array is adopted at the base station. Both the estimation and tracking are performed by exploiting the low-rank nature of the channel matrix. The accuracy of the estimate is improved by using a multi-slot approach: the slowly varying component of the low-rank channel is estimated from the observation of successive midambles (inter-slot tracking), while the fast varying component is updated over the burst interval in decision-directed mode (intra-slot tracking).
引用
收藏
页码：533 / 537
页数：5
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