Blind Turbo equalization algorithm based on hidden Markov model for continuous phase modulation signals

To solve the issues of the poor performance and convergence difficulties in the blind equalization of high order continuous phase modulation (CPM) signals, a new EM-SOVA channel blind equalization method was developed from the perspective of hidden Markov model(HMM). A novel blind Turbo equalization...

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Main Authors: Kai ZHONG, Hua PENG, Lin-dong GE
Format: Article
Language:zho
Published: Editorial Department of Journal on Communications 2015-03-01
Series:Tongxin xuebao
Subjects:
Online Access:http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2015071/
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author Kai ZHONG
Hua PENG
Lin-dong GE
author_facet Kai ZHONG
Hua PENG
Lin-dong GE
author_sort Kai ZHONG
collection DOAJ
description To solve the issues of the poor performance and convergence difficulties in the blind equalization of high order continuous phase modulation (CPM) signals, a new EM-SOVA channel blind equalization method was developed from the perspective of hidden Markov model(HMM). A novel blind Turbo equalization algorithm for high order CPM signals was proposed based on the combination of this method and Turbo equalization. The algorithm improved the equalization performance by applying the soft-output Viterbi algorithm(SOVA) within an EM iteration. Simultaneously, a soft infor-mation iterative process was used for further improvement of the system performance at a low signal-to-noise ratio. The analysis and simulation results show that the proposed algorithm provides a good blind equalization performance and convergence.
format Article
id doaj-art-f17eb8e20e61451b9924e93fb1c57ba1
institution Kabale University
issn 1000-436X
language zho
publishDate 2015-03-01
publisher Editorial Department of Journal on Communications
record_format Article
series Tongxin xuebao
spelling doaj-art-f17eb8e20e61451b9924e93fb1c57ba12025-01-14T06:45:45ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2015-03-013617017859690952Blind Turbo equalization algorithm based on hidden Markov model for continuous phase modulation signalsKai ZHONGHua PENGLin-dong GETo solve the issues of the poor performance and convergence difficulties in the blind equalization of high order continuous phase modulation (CPM) signals, a new EM-SOVA channel blind equalization method was developed from the perspective of hidden Markov model(HMM). A novel blind Turbo equalization algorithm for high order CPM signals was proposed based on the combination of this method and Turbo equalization. The algorithm improved the equalization performance by applying the soft-output Viterbi algorithm(SOVA) within an EM iteration. Simultaneously, a soft infor-mation iterative process was used for further improvement of the system performance at a low signal-to-noise ratio. The analysis and simulation results show that the proposed algorithm provides a good blind equalization performance and convergence.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2015071/continuous phase modulationhidden Markov modelsoft-output Viterbi algorithmexpectation maximiza-tion algorithmTurbo equalization
spellingShingle Kai ZHONG
Hua PENG
Lin-dong GE
Blind Turbo equalization algorithm based on hidden Markov model for continuous phase modulation signals
Tongxin xuebao
continuous phase modulation
hidden Markov model
soft-output Viterbi algorithm
expectation maximiza-tion algorithm
Turbo equalization
title Blind Turbo equalization algorithm based on hidden Markov model for continuous phase modulation signals
title_full Blind Turbo equalization algorithm based on hidden Markov model for continuous phase modulation signals
title_fullStr Blind Turbo equalization algorithm based on hidden Markov model for continuous phase modulation signals
title_full_unstemmed Blind Turbo equalization algorithm based on hidden Markov model for continuous phase modulation signals
title_short Blind Turbo equalization algorithm based on hidden Markov model for continuous phase modulation signals
title_sort blind turbo equalization algorithm based on hidden markov model for continuous phase modulation signals
topic continuous phase modulation
hidden Markov model
soft-output Viterbi algorithm
expectation maximiza-tion algorithm
Turbo equalization
url http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2015071/
work_keys_str_mv AT kaizhong blindturboequalizationalgorithmbasedonhiddenmarkovmodelforcontinuousphasemodulationsignals
AT huapeng blindturboequalizationalgorithmbasedonhiddenmarkovmodelforcontinuousphasemodulationsignals
AT lindongge blindturboequalizationalgorithmbasedonhiddenmarkovmodelforcontinuousphasemodulationsignals