Modification of Decoding Algorithm of Turbo Code on Frequency-Selective Channels

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2001, Vol. 24 ›› Issue (1): 6-11.

Previous Articles Next Articles

Modification of Decoding Algorithm of Turbo Code on Frequency-Selective Channels

LIN Jia-ru¹, WU Wei-ling¹, FENG Zhi-yong²

1.Information Engineering School, Beijing University of Posts and Telecommunications, Beijing 100876, China;
2.Continuing Education School, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2000-08-23 Online:2001-01-10

Abstract

Abstract: The performance of DS/CDMA systems on multipath fading Rayleigh channels is analyzed. And proposes a modified decoding algorithm of Turbo code on multipath frequency-selective fading channels,i.e.the signal with maximum ratio combiner divides by the all square of amplitudes of the channel,calculate the probability function γ for Turbo code,and then decode the signal as Turbo decoding.Computer simulations indicate that the modified algorithm improves greatly the performance of DS／CDMA systems on multipath frequency-selective fading channels and is a promising algorithm.

Key words: multipath fading, Rayleigh fading, Turbo code, DS/CDMA

CLC Number:

TN911.22

LIN Jia-ru, WU Wei-ling, FENG Zhi-yong. Modification of Decoding Algorithm of Turbo Code on Frequency-Selective Channels[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2001, 24(1): 6-11.

[1]	KANG Lin, ZHANG Ying-hai, LI Jin-lan, LI Xiu-hua, WANG Wei-dong. Stochastic k Coverage in Rayleigh Fading Channel [J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2015, 38(5): 62-65.
[2]	LIU Hai-tao, YIN Zhi-sheng, ZHANG Xue-jun. Performance Analysis of OFDM Receiver with Pulse Blanking in Frequency Selective Rayleigh Fading Channel [J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2015, 38(4): 29-33.
[3]	LI En-yu, DONG Yun-quan, SONG Chuan-wang, LI Yan-sheng. Research on the Self-Adaptive Opportunistic-and-Forward Scheme Based on Feedback [J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2015, 38(3): 61-65,70.
[4]	JIN Xiao-yan, ZHOU Xi-yuan, ZHANG Wan-lin. Modulation Recognition Using Adaptive MCMC in Multipath Fading Channel [J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2014, 37(1): 31-34.
[5]	LI Yan-ling, LI Bing-bing, LIU Ming-qian. Spatial Diversity Based MQAM Modulation Classification in Rayleigh Fading Channel [J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2012, 35(4): 64-67.
[6]	. Outage Probability and Error Performance Analysis in APRelayed  InterVehicular Communication System [J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2010, 33(6): 125-128.
[7]	XU Zhao;WANG Ke;LI Zhuo. Decoding Structure of Turbo Code Based on Parallel Prediction Control [J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2009, 32(6): 114-119.
[8]	WANG Wei-bing, ZHU Qiu-ping, XU Xin-yi. An Algorithm for OFDM Frame Synchronization on Frequency Selective Channel and Performance Analysis [J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2008, 31(5): 98-101.
[9]	ZHENG Juan1, HAN Jing1, LV Jing-yang1, WU Wei-ling1, WANG Yan-wen2. High Performance Synchronization in MIMO-OFDM System [J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2008, 31(1): 112-115.
[10]	YANG Ying, WU Wei-ling. An Adaptive Selective Repeat ARQ Scheme In Correlated Rayleigh Fading Channel [J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2007, 30(3): 36-39.
[11]	LIU Zhen,YANG Dacheng. Research on FiniteState Markov Model for Rayleigh Fading Channels [J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2005, 28(5): 85-88.
[12]	ZHOU En,CHEN Maomao,WANG Wenbo. A Novel Timing Estimation Method for OFDM Systems over Multipath Fading Channels [J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2005, 28(3): 62-64.
[13]	ZHANG Jie，CAI Peng，ZHANG Ping. A Novel OFDM Timing Synchronization Algorithm in Multipath Fading Channel [J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2005, 28(2): 105-108.
[14]	LU Yan-ping, WU Wei-ling. A New Hybrid ARQ Scheme Using Turbo Codes [J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2005, 28(1): 66-69.
[15]	WU Zhan-ji, MENG De-xiang, WU Wei-ling. New SNR Estimator and Its Applications in Turbo Decoding [J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2004, 27(4): 102-106.

Modification of Decoding Algorithm of Turbo Code on Frequency-Selective Channels

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments