Mean Square Error Beamforming in SatCom: Uplink-Downlink Duality with Per-Feed Constraints

被引：0
|
作者：
Gruendinger, Andreas [1 ]
Joham, Michael [1 ]
Barthelme, Andreas [1 ]
Utschick, Wolfgang [1 ]
机构：
[1] Tech Univ Munich, Associate Inst Signal Proc, D-80290 Munich, Germany
来源：
2014 11TH INTERNATIONAL SYMPOSIUM ON WIRELESS COMMUNICATIONS SYSTEMS (ISWCS) | 2014年
关键词：
uplink-downlink MSE duality; imperfect CSI; MSE balancing; per-feed constraints; satellite communication;
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
Balancing the per-user average mean square errors (MSEs) of a satellite communication (SatCom) system under per-feed limitations-linear transmit power constraints-is the focus of this work. We propose an uplink-downlink duality for this optimization via Lagrangian multiplier theory. Strong duality is proven. Simple fixed point methods are used for the uplink power allocation and the worst-case noise covariance calculation. Simulation results are used to compare the performance for the SatCom channel with that of a standard Gaussian channel model.
引用
收藏
页码：600 / 605
页数：6
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