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	Precoded OFDM system for ICI mitigation over time-frequency selective fading channels
	Long Yi ; Kuang Linling ; Lu Jianhua
	2010-10-12 ; 2010-10-12
关键词	Practical Theoretical or Mathematical/ channel coding fading channels Hadamard matrices intercarrier interference interference suppression OFDM modulation precoding time-frequency analysis/ precoded OFDM system ICI mitigation intercarrier interference time-frequency selective fading channels orthogonal frequency-division multiplexing system Hadamard-matrix/ B6250 Radio links and equipment B0210 Algebra B6120B Codes
中文摘要	In orthogonal frequency-division multiplexing (OFDM) systems, the capability to support high mobility is greatly limited by the intercarrier interference (ICI) caused by time-frequency selective fading channels. This paper presents a precoded OFDM system for ICI mitigation. A precoder is introduced to relieve the ICI by transmitting /i N/-point composite information symbols at twice the subcarrier interval. A Hadamard-matrix-like pilot pattern is used to recover the composite information symbols in a postprocessor at the receiver. Simulations show that, compared to the conventional self-cancellation scheme, this scheme gives much better signal-to-interference-noise ratio performance with much less overhead. Furthermore, the scheme can support twice the vehicle speed in time-frequency selective fading channels than the standard OFDM systems without ICI mitigation.
语种	英语
出版者	Tsinghua University Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/82808]
专题	清华大学
推荐引用方式 GB/T 7714	Long Yi,Kuang Linling,Lu Jianhua. Precoded OFDM system for ICI mitigation over time-frequency selective fading channels[J],2010, 2010.
APA	Long Yi,Kuang Linling,&Lu Jianhua.(2010).Precoded OFDM system for ICI mitigation over time-frequency selective fading channels..
MLA	Long Yi,et al."Precoded OFDM system for ICI mitigation over time-frequency selective fading channels".(2010).

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