Joint training interval length and power allocation optimization for MIMO flat fading channels

被引：3
|
作者：
Hadj-Kacem, Imed [1 ,2 ]
Sellami, Noura [1 ]
Fijalkow, Inbar [2 ]
Roumy, Aline [3 ]
机构：
[1] ENIS, Lab LETI, Route Sokra Km 3-5,BP 3038, Sfax, Tunisia
[2] Univ Cregy Pontoise, CNRS, ENESA, UMR 8051, F-95000 Rennes, France
[3] INRIA, F-35042 Rennes, France
来源：
2009 6TH INTERNATIONAL SYMPOSIUM ON WIRELESS COMMUNICATION SYSTEMS (ISWCS 2009) | 2009年
关键词：
PERFORMANCE; ANTENNA; ERRORS;
D O I：
10.1109/ISWCS.2009.5285251
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
In this paper, we jointly optimize the training interval length and the power allocation for MIMO (Multiple-Input Multiple-Output) flat fading channels when a Maximum A Posteriori (MAP) detector is used at the receiver and the training and data powers are allowed to vary. We calculate the equivalent Signal-to-Noise Ratio (SNR) at the output of the MAP detector. Based on this expression, we define an effective SNR taking into account the data throughput loss due to the use of pilot symbols. We find that the optimal length of the training interval maximizing this quantity is equal to the number of transmit antennas. When the values of the pilot and data powers are not allowed to be different, we give the optimal training interval length maximizing the effective SNR and we show that it can be larger than the number of transmit antennas.
引用
收藏
页码：16 / +
页数：2
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