Noise-nulling superimposed pilots based channel estimation for OFDM modulated amplify-and-forward relay networks

被引：0

作者：

Li, Congying ^{[1
]}

Dou, Gaoqi ^{[1
]}

Gao, Jun ^{[1
]}

机构：

[1] Department of Communication Engineering, Naval University of Engineering, Wuhan

来源：

Journal of Computational Information Systems | 2015年 / 11卷 / 14期

关键词：

Amplify-and Forward Relay Networks; Corresponding author; Noise-nulling Superimposed Pilots; OFDM;

D O I：

10.12733/jcis14782

中图分类号：

学科分类号：

摘要：

In this letter, a novel noise-nulling superimposed pilots (NNSP) scheme for OFDM modulated Amplify- and-Forward relay networks is proposed, and a method to design superimposed training sequences is presented to estimate the channel of relay→destination link. By nulling the noising before superimposed pilots at the relay, the interference noise, introduced by the source → relay link, to the relay training sequences can be eliminated. Besides, the superimposed pilots designed here have perfect Peak-to- Average Ratio (PAR) performance and can to be applied in OFDM systems. Simulation results show that the NNSP yield better MSE performance than that without noise elimination. ©, 2015, Journal of Computational Information Systems. All right reserved.

引用

页码：5267 / 5275

页数：8