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Comparison of Different Soft Demodulation and Decoding Algorithms in Coded M-ary Orthogonal DS-CDMA Systems

Xiao, P, Strom, E and Carrasco, R (2005) Comparison of Different Soft Demodulation and Decoding Algorithms in Coded M-ary Orthogonal DS-CDMA Systems In: Second IFIP International Conference on Wireless and Optical Communications Networks, 2005-03-06 - 2005-03-08.

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Abstract

The system under study is a convolutionally coded and orthogonally modulated DS-CDMA system in time-varying frequency selective Rayleigh fading channels. In this paper, we investigate several iterative schemes based on soft demodulation and decoding algorithms. The performance of different strategies are evaluated numerically and proved to achieve substantial performance gain compared to the conventional hard decision based scheme, especially when the soft demodulator is assisted by decision directed channel estimation and interference cancellation techniques, and also when demodulation and decoding are performed jointly in an iterative manner.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Communication Systems Research
Authors :
AuthorsEmailORCID
Xiao, PUNSPECIFIEDUNSPECIFIED
Strom, EUNSPECIFIEDUNSPECIFIED
Carrasco, RUNSPECIFIEDUNSPECIFIED
Date : 6 June 2005
Identification Number : 10.1109/WOCN.2005.1436092
Contributors :
ContributionNameEmailORCID
PublisherIEEE, UNSPECIFIEDUNSPECIFIED
Depositing User : Symplectic Elements
Date Deposited : 13 Dec 2013 13:37
Last Modified : 13 Dec 2013 13:37
URI: http://epubs.surrey.ac.uk/id/eprint/798987

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