Subspace tracking for uplink/downlink array processing in CDMA systems

被引：0
|
作者：
Simeone, O [1 ]
Nicoli, M [1 ]
Spagnolini, U [1 ]
机构：
[1] Politecn Milan, Dip Elettr & Informaz, I-20133 Milan, Italy
来源：
GLOBECOM'03: IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, VOLS 1-7 | 2003年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In antenna array systems, downlink beamforming and uplink maximum likelihood structured channel estimation can be formulated under a common framework related to the algebraic stucture of the two problems. The slow variations of the uplink and downlink spatial subspaces, due to moving terminals, can be tracked by using an adaptive structure based on a common processing block, namely a subspace tracker. Simulations for realistic propagation conditions show that the structure is able to efficiently cope with fast-varying fading channels, allowing relevant gains compared to conventional techniques.
引用
收藏
页码：824 / 828
页数：5
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