Approximate ML Decision-Feedback Block Equalizer for Doubly Selective   Fading Channels

doi:10.1109/TVT.2008.2009758

CORC > 北京大学 > 信息科学技术学院

	Approximate ML Decision-Feedback Block Equalizer for Doubly Selective Fading Channels
	Song, Lingyang ; de Lamare, Rodrigo Caiado ; Hjorungnes, Are ; Burr, Alister G.
刊名	ieee transactions on vehicular technology
	2009
关键词	Doubly selective fading channels equalization linear minimum mean square error (MMSE) matched filter maximum-likelihood sequence estimation (MLSE) MMSE decision-feedback equalizer (MMSE-DFE) INTERFERENCE SYSTEMS CODES
DOI	10.1109/TVT.2008.2009758
英文摘要	To effectively suppress intersymbol interference (ISI) at low complexity, in this paper, we propose an approximate maximum-likelihood decision-feedback block equalizer (A-ML-DFBE) for doubly selective (frequency- and time-selective) fading channels. The proposed equalizer design makes efficient use of the special time-domain representation of multipath channels through a matched filter, a sliding window, a Gaussian approximation, and a decision feedback. The A-ML-DFBE has the following features: 1) It achieves a performance that is close that to that of maximum-likelihood sequence estimation (MLSE) and significantly outperforms minimum mean square error (MMSE)-based detectors. 2) It has substantially lower complexity than conventional equalizers. 3) It easily realizes complexity and performance tradeoff by adjusting the length of the sliding window. 4) It has a simple and fixed-length feedback filter. The symbol error rate (SER) is derived to characterize the behavior of the A-ML-DFBE and can also be used to find the key parameters of the proposed equalizer. In addition, we further prove that the A-ML-DFBE obtains full multipath diversity.; Engineering, Electrical & Electronic; Telecommunications; Transportation Science & Technology; SCI(E); EI; 1; ARTICLE; 5; 2314-2321; 58
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/152773]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Song, Lingyang,de Lamare, Rodrigo Caiado,Hjorungnes, Are,et al. Approximate ML Decision-Feedback Block Equalizer for Doubly Selective Fading Channels[J]. ieee transactions on vehicular technology,2009.
APA	Song, Lingyang,de Lamare, Rodrigo Caiado,Hjorungnes, Are,&Burr, Alister G..(2009).Approximate ML Decision-Feedback Block Equalizer for Doubly Selective Fading Channels.ieee transactions on vehicular technology.
MLA	Song, Lingyang,et al."Approximate ML Decision-Feedback Block Equalizer for Doubly Selective Fading Channels".ieee transactions on vehicular technology (2009).