Title :
Multi-stage partial PIC receivers for multi-rate DS-CDMA system with multiple modulation
Author :
Han, Seung Hee ; Lee, Jae Hong
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., South Korea
Abstract :
In a multi-rate DS-CDMA system with multiple modulation, modulation format is adjusted according to the data rate of each user while symbol duration is fixed for all users. In this paper, two types of multi-stage partial parallel interference cancellation (PIC) receivers are considered for multi-rate DS-CDMA system with multiple modulation: multi-stage PIC receiver with partial cancellation factors and multi-stage PIC receiver with decision thresholds. Performance of the receivers is evaluated by simulation in a Rayleigh fading channel. It is shown that the multi-stage PIC receiver with partial cancellation factors achieves significant performance improvement over the matched filter (MF) receiver and has much lower symbol error rate (SER) than multi-stage PIC receiver for multi-rate DS-CDMA system with multiple modulation in a Rayleigh fading channel.
Keywords :
Rayleigh channels; code division multiple access; interference suppression; modulation; radio receivers; radiofrequency interference; spread spectrum communication; Rayleigh fading channel; matched filter receiver; multiple modulation; multirate DS-CDMA system; multistage partial parallel interference cancellation receiver; partial cancellation factor; symbol error rate; Degradation; Delay; Detectors; Fading; Interference cancellation; Matched filters; Modulation; Multiaccess communication; Multiple access interference; Silicon carbide;
Conference_Titel :
Wireless Communications and Networking, 2003. WCNC 2003. 2003 IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-7700-1
DOI :
10.1109/WCNC.2003.1200416
