Title :
A hybrid interference canceller for CDMA systems in Rayleigh fading channels
Author :
Malik, R. ; Dubey, V.K. ; McGuffin, B.
Author_Institution :
Commun. Res. Lab., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
Interest has peaked in a technology that has come to be known as wide-band code division multiple access (WCDMA). Multi-user detection has been hailed as one of the key enabling technologies for this system and has been recommended for use in 3G standards. In this paper we evaluate the performance of a hybrid interference cancellation (HIC) technique that combines the advantages of both the successive interference canceller (SIC) and the parallel interference canceller (PIC). The performance of the HIC for both hard and soft decision strategies is evaluated in a single-path flat fading channel and found to produce substantial improvements in performance over the conventional detector. The sensitivity of the detector to channel estimation errors is also evaluated
Keywords :
Rayleigh channels; broadband networks; cellular radio; code division multiple access; interference suppression; multiuser channels; radio receivers; radiofrequency interference; signal detection; 3G standards; CDMA systems; HIC technique; PIC; Rayleigh fading channels; SIC; WCDMA; channel estimation errors; hard decision strategies; hybrid interference canceller; multiuser detection; parallel interference canceller; single-path flat fading channel; soft decision strategies; successive interference canceller; wide-band code division multiple access; Detectors; Digital signal processing; Fading; Interference cancellation; Laboratories; Maximum likelihood estimation; Multiaccess communication; Multiuser detection; Phase estimation; Silicon carbide;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd
Conference_Location :
Rhodes
Print_ISBN :
0-7803-6728-6
DOI :
10.1109/VETECS.2001.944642
