Space-Time Coding Schemes with Antenna Selection over Fading Channels

被引：0
|
作者：
Wang L. [1 ]
Li G. [1 ]
Qian H. [1 ]
Chen H. [1 ]
Bao J. [1 ]
机构：
[1] School of Communication Engineering, Hangzhou Dianzi University, Hangzhou
来源：
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2019年 / 53卷 / 12期
关键词：
Antenna selection; Average symbol error rate; Channel prediction; Fading channel; High power amplifier; Space-time code;
D O I：
10.7652/xjtuxb201912019
中图分类号：
学科分类号：
摘要：
Aiming at the problem that the feedback delay can deteriorate the error performance of the space-time coding schemes with transmit antenna selection (TAS) over fading channels, space-time coding schemes with nonlinear high power amplifier are proposed by using minimum mean square error channel predictor and input power back-off technology. Firstly, the transmit antennas are selected based on the predictive channel matrix and the maximization criterion of the signal-to-noise ratio (SNR) at the receiver. Then, the space-time codes are used to encode the signal which is modulated by rectangular quadrature amplitude modulation, and the output of the space-time encoder is amplified by a nonlinear high power amplifier and transmitted by the selected antennas. Finally, the original information is recovered after maximum ratio combination, maximum likelihood decoding, and rectangular quadrature amplitude demodulation at the receiver. Numerical and simulation results show that when the value of input power back-off is 3 dB and the normalized delay is 0.02, the proposed scheme can achieve about 6.4 dB coding gain compared with the space-time coding schemes with delayed TAS, and when average symbol error rate is 10-4, the proposed scheme which uses power amplifier with soft envelope limitation can improve SNR by about 2.3 dB and 4.5 dB compared with the proposed schemes that use the solid-state power amplifier and the traveling wave tube power amplifier, respectively. © 2019, Editorial Office of Journal of Xi'an Jiaotong University. All right reserved.
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页码：146 / 152
页数：6
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