Multistage channel estimation with LMS parallel interference cancellation for asynchronous DS-CDMA in frequency-selective Rayleigh channels

We propose a multistage channel estimation method using LMS parallel interference cancellation with the assistance of periodically transmitted pilot symbols. After obtaining the channel estimates, the performance of various parallel interference methods are evaluated. RAKE reception and maximum rati...

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Bibliographic Details
Main Authors: Xiaoming Xue, Tjeng Thiang Tjhung
Format: Conference Proceeding
Language:English
Subjects:
AWGN
Channel estimation
Delay effects
Fading
Frequency estimation
Interference cancellation
Least squares approximation
Multiaccess communication
Multiple access interference
Signal processing
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Summary:We propose a multistage channel estimation method using LMS parallel interference cancellation with the assistance of periodically transmitted pilot symbols. After obtaining the channel estimates, the performance of various parallel interference methods are evaluated. RAKE reception and maximum ratio combining (MRC) are adopted. Simulation results show that the proposed channel estimation scheme for DS-CDMA system works well in frequency-selective Rayleigh fading channels with Doppler spread when the system load is not too high.
DOI:10.1109/ISSPA.2001.950166