Iterative Demodulation of M-Ary Orthogonal Signaling Formats in Coded DS-CDMA Systems with Soft Interference Cancellation and Channel Estimation(Wireless Communication Technologies)

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概要

• 論文の詳細を見る

• The system under study is a convolutionally coded and orthogonally modulated DS-CDMA system over time-varying frequency-selective Rayleigh fading channels in multiuser environments. Iterative soft demodulation and decoding using the Turbo principle can be applied to such a system to increase the system capacity and performance. To combat multiple access interference (MAI), we incorporate the interference cancellation (IC) and decision-directed channel estimation (CE) in the demodulator. However, both IC and CE are subject to performance degradation due to incorrect decisions. In order to prevent error propagation from the decision feedback, soft interference cancellation and channel estimation assisted demodulation is proposed in this paper. The performance of this strategy is evaluated numerically and proved to be superior to the hard decision-directed approach with a minor increase in complexity.

• 社団法人電子情報通信学会の論文
• 2006-01-01

著者

• Strom Erik

  Dept. Of Signals And Systems Chalmers University Of Technology

• XIAO Pei

  School of Electrical, Electronic and Computer Engineering, University of Newcastle

• Xiao Pei

  School Of Electrical Electronic And Computer Engineering University Of Newcastle

関連論文

• Iterative Demodulation of M-Ary Orthogonal Signaling Formats in Coded DS-CDMA Systems with Soft Interference Cancellation and Channel Estimation(Wireless Communication Technologies)

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