New Parallel Interference Cancellation for DS/CDMA Systems Over Rayleigh Fading Channel

Author

Xu, Guoxiong ; Gan, Liangcai

Author_Institution

Sch. of Electron. Inf., Zhongyuan Univ. of Technol., Zhengzhou

fYear

2007

fDate

21-25 Sept. 2007

Firstpage

865

Lastpage

868

Abstract

This paper firstly investigates an optimal parallel interference cancellation (PIC) scheme for DS/CDMA system. Secondly, to reduce the high implementation complexity encountered by the optimal PIC, we propose a reduced-complexity PIC. The performance of the reduced-complexity PIC over Rayleigh fading channel is analyzed and compared to the optimal PIC and conventional PIC, respectively. The simulation results show that the reduced-complexity PIC shows a performance comparable to the optimal PIC and dominantly outperforms the conventional PIC. It is also shown that the reduced-complexity PIC with one interference cancellation (IC) stage is superior to the conventional PIC with two IC stages in performance, which is of practical value because PIC with fewer IC stages can bring shorter processing delay.

Keywords

Rayleigh channels; code division multiple access; communication complexity; interference suppression; radiofrequency interference; spread spectrum communication; DS-CDMA systems; Rayleigh fading channel; optimal parallel interference cancellation; parallel interference cancellation; reduced-complexity PIC; Delay estimation; Fading; Gallium nitride; Interference cancellation; Interference suppression; Multiaccess communication; Multiple access interference; Paper technology; Performance analysis; Random variables;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-1311-9

Type

conf

DOI

10.1109/WICOM.2007.223

Filename

4339998