CSI Feedback-based CS for Underwater Acoustic Adaptive Modulation OFDM System with Channel Prediction

In this paper, we investigate the performance of adaptive modulation （AM） orthogonal frequency division multiplexing （OFDM） system in underwater acoustic （UWA） communications. The aim is to solve the problem of large feedback overhead for channel state information （CSI） in every subcarrier. A novel...

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Bibliographic Details
Published inChina ocean engineering Vol. 28; no. 3; pp. 391 - 400
Main Author 蒯小燕 孙海信 齐洁 程恩 许小卡 郭瑜辉 陈友淦
Format Journal Article
LanguageEnglish
Published Heidelberg Chinese Ocean Engineering Society 01.06.2014
Subjects
Adaptive systems
Algorithms
Channels
Coastal Sciences
Communication systems
CSI
Engineering
Feedback
Fluid- and Aerodynamics
Marine
Marine & Freshwater Sciences
Modulation
Numerical and Computational Physics
Oceanography
OFDM系统
Offshore Engineering
Orthogonal Frequency Division Multiplexing
Simulation
Underwater acoustics
信道状态信息
信道预测
反馈
基础
水声信道
自适应调制
adaptive modulation
channel prediction
compressed sensing
underwater acoustic channels
OFDM
CSI feedback
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Summary:In this paper, we investigate the performance of adaptive modulation （AM） orthogonal frequency division multiplexing （OFDM） system in underwater acoustic （UWA） communications. The aim is to solve the problem of large feedback overhead for channel state information （CSI） in every subcarrier. A novel CSI feedback scheme is proposed based on the theory of compressed sensing （CS）. We propose a feedback from the receiver that only feedback the sparse channel parameters. Additionally, prediction of the channel state is proposed every several symbols to realize the AM in practice. We describe a linear channel prediction algorithm which is used in adaptive transmission. This system has been tested in the real underwater acoustic channel. The linear channel prediction makes the AM transmission techniques more feasible for acoustic channel communications. The simulation and experiment show that significant improvements can be obtained both in bit error rate （BER） and throughput in the AM scheme compared with the fixed Quadrature Phase Shift Keying （QPSK） modulation scheme. Moreover, the performance with standard CS outperforms the Discrete Cosine Transform （DCT） method.
Bibliography:In this paper, we investigate the performance of adaptive modulation （AM） orthogonal frequency division multiplexing （OFDM） system in underwater acoustic （UWA） communications. The aim is to solve the problem of large feedback overhead for channel state information （CSI） in every subcarrier. A novel CSI feedback scheme is proposed based on the theory of compressed sensing （CS）. We propose a feedback from the receiver that only feedback the sparse channel parameters. Additionally, prediction of the channel state is proposed every several symbols to realize the AM in practice. We describe a linear channel prediction algorithm which is used in adaptive transmission. This system has been tested in the real underwater acoustic channel. The linear channel prediction makes the AM transmission techniques more feasible for acoustic channel communications. The simulation and experiment show that significant improvements can be obtained both in bit error rate （BER） and throughput in the AM scheme compared with the fixed Quadrature Phase Shift Keying （QPSK） modulation scheme. Moreover, the performance with standard CS outperforms the Discrete Cosine Transform （DCT） method.
KUAI Xiao-yan, SUN Hai-xin , QI Jie,CHENG En , XU Xiao-ka ,GUO Yu-hui ,CHEN You-gan （aKey Laboratory of Underwater Acoustic Communication and Marine Information Technology, Ministry of Education Xiamen University, Xiamen 361005, China; b Department of Electrical and Computer Engineering, University of Connecticut, Storrs, CT 06269, USA）
32-1441/P
adaptive modulation; OFDM; CSI feedback; compressed sensing; channel prediction; underwater acoustic channels
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0890-5487
2191-8945
DOI:10.1007/s13344-014-0031-6