The study of parallel interference weighted canceller multiuser detection

This paper presents an idea about parallel interference weighted canceller (PIWC) to mitigate the degrading effects of unreliable interference estimation that is the key shortcoming of a total interference canceller. Moreover, the computational complexity of the scheme is linear in the number of users and only a little more than that of total PIC. So, the PIWC has great cost of practicability. Based on the Gaussian approximation, the determinate weighting and fuzzy weighting have been studied. Simulation results confirm that the PIWC is better than the total PIC and the fuzzy weighting is better than determinate weighting.

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