A new layered space--time detection algorithm for frequency selective fading multiple-input multiple-output channels based on particle filter
Du Zheng-Cong(杜正聪)a)b)†, Tang Bin(唐斌)a), and Liu Li-Xin(刘立新)b)
a College of Electronic Engineering, University of Electronics Science and Technology of China, Chengdu 610054, China; b Panzhihua University, Panzhihua 617000, China
Abstract In this paper, a new observation equation of non-Gaussian frequency selective fading Bell Labs layered space time (BLAST) architecture system is proposed, which is used for frequency selective fading channels and non-Gaussian noise in an application environment of BLAST system. With othogonal matrix triangularization (QR decomposition) of the channel matrix, the static observation equation of frequency selective fading BLAST system is transformed into a dynamic state space model, and then the particle filter is used for space--time layered detection. Making the full use of the finite alphabet of the digital modulation communication signal, the optimal proposal distribution can be chosen to produce particle and update the weight. Incorporated with current method of reducing error propagation, a new space--time layered detection algorithm is proposed. Simulation result shows the validity of the proposed algorithm.
Received: 27 October 2005
Revised: 28 June 2006
Accepted manuscript online:
PACS:
84.40.Ua
(Telecommunications: signal transmission and processing; communication satellites)
Fund: Project supported by the National High Technology Development Program of China (Grant No 2002AA123032).
Cite this article:
Du Zheng-Cong(杜正聪), Tang Bin(唐斌), and Liu Li-Xin(刘立新) A new layered space--time detection algorithm for frequency selective fading multiple-input multiple-output channels based on particle filter 2006 Chinese Physics 15 2481
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