Title :
The study of parallel interference weighted canceller multiuser detection
Author :
Xiao, Lei ; Liang, Qinglin
Author_Institution :
Electron. Dept, Peking Univ., Beijing, China
Abstract :
This paper presents an idea for a parallel interference weighted canceller (PIWC) to mitigate the degrading effects of unreliable interference estimation that is the key shortcoming of the 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 the total PIC. So, the PIWC has great practicability. Based on Gaussian approximation, the determinate weighting and fuzzy weighting are studied. Simulation results confirm that the PIWC is better than the total PIC and the fuzzy weighting is better than determinate weighting
Keywords :
Gaussian distribution; code division multiple access; computational complexity; estimation theory; fuzzy control; interference suppression; multiuser channels; signal detection; spread spectrum communication; DS-CDMA; Gaussian approximation; determinate weighting; fuzzy weighting; linear computational complexity; multiuser detection; parallel interference weighted canceller; simulation; unreliable interference estimation; Communication switching; Computational complexity; Computational modeling; Costs; Degradation; Estimation; Gaussian approximation; Interference cancellation; Micromechanical devices; Mirrors; Multiple access interference; Multiuser detection; Optical arrays; Optical crosstalk; Optical fiber polarization; Optical fibers; Optical interferometry; Optical switches; Signal processing;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.800339
