Multi-stage PIC receiver with decision thresholds over rayleigh fading channel

Parallel interference cancellation (PIC) is a family of low complexity multi-user detection methods for DS/CDMA systems. The performance of the multistage PIC depends on the decision function used in the interference cancellation. In this paper, we propose to provide the performance of PIC receiver...

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Bibliographic Details
Published in2009 Mediterrannean Microwave Symposium (MMS) pp. 1 - 5
Main Authors Moussaoui, M., Zaizouni, M., Rouvaen, J.-M.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2009
Subjects
Attenuation
Band pass filters
Code division multiple access
Cutoff frequency
Decision threshold
Design optimization
Fading
Insertion loss
Magnetic separation
Matched filters
Microstrip
Microwave filters
Multi-user detection
Parallel Interference Cancellation
Partial cancellation
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Summary:Parallel interference cancellation (PIC) is a family of low complexity multi-user detection methods for DS/CDMA systems. The performance of the multistage PIC depends on the decision function used in the interference cancellation. In this paper, we propose to provide the performance of PIC receiver using Xha function `clipping' with respect to decision threshold value. The decision threshold determines how much MAI is to be cancelled with hard decision and high probability. Otherwise, we used a soft bit decision to cancel only the interference of unreliable users form the received signal. This approach is original compared to PIC receiver with decision thresholds using null zone hard decision. It is shown that the proposed detector performs well under realistic conditions, particularly in the case of error optimisation of decision threshold value.
ISBN:1424446643
9781424446643
ISSN:2157-9822
2157-9830
DOI:10.1109/MMS.2009.5409785