Optimal power allocation for SM-OFDM systems with imperfect channel estimation

被引：4

作者：

Yu, Feng ^{[1
]}

Song, Lijun ^{[2
]}

Lei, Xia ^{[1
]}

Xiao, Yue ^{[1
]}

Jiang, Zhao Xiang ^{[1
]}

Jin, Maozhu ^{[3
]}

机构：

[1] Univ Elect Sci & Technol China, Chengdu 610054, Peoples R China

[2] Chengdu Univ Informat Technol, Chengdu 610225, Peoples R China

[3] Sichuan Univ, Sch Business, Chengdu 610065, Peoples R China

来源：

CHAOS SOLITONS & FRACTALS | 2016年 / 89卷

基金：

中国国家自然科学基金;

关键词：

Spatial modulation orthogonal frequency division multiplex; Channel estimation; Power allocation;

D O I：

10.1016/j.chaos.2015.11.014

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

This paper analyses the bit error rate (BER) of the spatial modulation orthogonal frequency division multiplex (SM-OFDM) system and derives the optimal power allocation between the data and the pilot symbols by minimizing the upper bound for the BER operating with imperfect channel estimation. Furthermore, we prove the proposed optimal power allocation scheme applies to all generalized linear interpolation techniques with the minimum mean square error (MMSE) channel estimation. Simulation results show that employing the proposed optimal power allocation provides a substantial gain in terms of the average BER performance for the SM-OFDM system compared to its equal-power-allocation counterpart. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：263 / 269

页数：7

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