Channel Estimation and Data Detection in the Presence of Phase Noise in MIMO-OFDM Systems With Independent Oscillators

被引：21

作者：

Lee, Tae-Jun ^{[1
]}

Ko, Young-Chai ^{[2
]}

机构：

[1] Korea Univ, Dept IT Convergence, Seoul 136713, South Korea

[2] Korea Univ, Sch Elect Engn, Seoul 136713, South Korea

来源：

IEEE ACCESS | 2017年 / 5卷

关键词：

MIMO; OFDM; phase noise; RF impairment; mmWave; oscillators; channel estimation; common phase error (CPE); inter-carrier interference (ICI); OPTIMAL TRAINING SIGNALS; FREQUENCY OFFSET; JOINT ESTIMATION; MITIGATION; DESIGN; COMPENSATION;

D O I：

10.1109/ACCESS.2017.2709325

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, we propose the mitigating scheme to reduce the effects of phase noise in multiinput multi-output-orthogonal frequency division multiplexing system with independent oscillator in each RF chain. Our proposed schemes consist of two stages; channel estimation stage and data decoding stage. In the first stage, we propose the channel estimation algorithm based on maximum a posteriori (MAP) estimator and a method of selecting the training sequence for channel estimation and we provide the mathematical analysis of our proposed scheme. In the second stage, MAP estimators are used to jointly estimate phase noise at TX and RX and detect data symbols. For analysis of mean square error (MSE) performances, we derive Bayesian Cramer-Rao bound for multi-parameter estimation problem in each stage. At the end of this paper, we demonstrate from our simulation results that our mathematical analysis is accurate and the proposed algorithm improves the bit-error-rate performance and MSE performance compared with existing schemes.

引用

页码：9647 / 9662

页数：16

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