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Channel Estimation and Decoding Iteration Algorithm over DoublySelective Fading Channels Based on FG.PF
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[1]WANG Zhongyong,FENG Liting,DUAN Linlin.Channel Estimation and Decoding Iteration Algorithm over DoublySelective Fading Channels Based on FG.PF[J].Journal of Zhengzhou University (Engineering Science),2014,35(02):46-49.[doi:doi:10.3969/jissn.1671 -6833.2014.02.011]
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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 35卷 Number of periods: 2014 02 Page number: 46-49 Column: Public date: 2014-04-30
Title:
Channel Estimation and Decoding Iteration Algorithm over DoublySelective Fading Channels Based on FG.PF
Author(s):
WANG Zhongyong;  FENG Liting;  DUAN Linlin
1.School of lnformation Engineering, 2hengzhou [imiversity, 2hengzhou 450001, China; 2. lnstitute of Scienee, Informationand Engineering University, Zhengzhou 450001 ,China
Keywords:
joint channel estimation and deeoding;  doubly seleetive fading channel;  uniform FG model;  jointFG-PF algorithm
CLC:
-
DOI:
doi:10.3969/jissn.1671 -6833.2014.02.011
Abstract:
In this paper, a joint channel estimation and deeoding algorithm over doubly seleetive fading chan-nels is proposed. Based on Faetor Graph and Sum-Produet algorithm, the channel estimator and the deeoder,as independent information proeessors and using different internal/external update rules, are integrated into aunified FG model. Combined with particle filter algorithm, the channel parameters are tracked and estimatedin real time to realize the iterative message passing. The simulations show, under certain pilot interval andnumber of partieles, the perormanee of the algorithm is close to the known channel information with clear iter-ative process, and effeetively solve the low frequeney spectrum utilization problem.
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