Design of Optimal Linear Precoder and Decoder for MIMO Channels with Per Antenna Power Constraint and Imperfect CSI

被引：5

作者：

Merline, A. ^{[1
]}

Thiruvengadam, S. J. ^{[2
]}

机构：

[1] Sethu Inst Technol, Dept Elect & Commun Engn, Kariapatti 626115, India

[2] Thiagarajar Coll Engn, Dept Elect & Commun Engn, TIFAC CORE Wireless Technol, Madurai 625015, Tamil Nadu, India

来源：

WIRELESS PERSONAL COMMUNICATIONS | 2014年 / 75卷 / 02期

关键词：

MIMO; Per antenna power constraint; Imperfect CSI; Precoder; MSE; UNIFIED FRAMEWORK; TRANSCEIVERS; TRANSMISSION;

D O I：

10.1007/s11277-013-1421-4

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

This paper addresses the problem of designing joint optimum precoder and decoder for multiple-input multiple-output communication system. Conventionally, most of the joint precoder and decoder designs are based on the sum power constraint (SPC) at the transmitter and perfect channel state information (CSI). However, in practice, per-antenna power constraint is more realistic as the power at each transmit antenna is limited individually by the linearity of the power amplifier. Further, the estimate of CSI cannot be obtained perfectly by any methods. Under imperfect CSI, the aim is to design jointly optimum precoder and decoder subject to a power constraint that jointly meets both per-antenna and SPCs. The objective function is formulated into an optimization problem that minimizes the mean square error in estimating the transmitted signal. The simulation results show that the proposed scheme has a near-optimum performance under practical constraints.

引用

页码：1251 / 1263

页数：13

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