Optimal Selection of Weighting Factors for Variance-Reduced Partial Parallel Interference Cancellation in MC-CDMA Systems

Author

Wang, Chin-Liang ; Chu, Chang-Chen

Author_Institution

Dept. of Electr. Eng., National Tsing Hua Univ., Hsinchu

fYear

2007

fDate

11-15 March 2007

Firstpage

1008

Lastpage

1012

Abstract

This paper presents an optimal weighting factor (OWF) selection algorithm for the variance-reduced partial parallel interference cancellation (VRPPIC) technique proposed by Wang and Wu in multicarrier code division multiple access systems. In this approach, a monotonically increasing conditional variance function of weighting factors derived from the VRPPIC operations is minimized under a system loading constraint so that the OWFs can be easily obtained. Simulation results show that the proposed algorithm can effectively enhance the system performance.

Keywords

code division multiple access; interference suppression; MC-CDMA systems; VRPPIC operations; conditional variance function; multicarrier code division multiple access systems; multiple access interference; optimal weighting factor; system loading constraint; variance-reduced partial parallel interference cancellation; AWGN; Bit error rate; Communications Society; Interference cancellation; Multiaccess communication; Multicarrier code division multiple access; Multiple access interference; Multiuser detection; Peer to peer computing; System performance;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference, 2007.WCNC 2007. IEEE

Conference_Location

Kowloon

ISSN

1525-3511

Print_ISBN

1-4244-0658-7

Electronic_ISBN

1525-3511

Type

conf

DOI

10.1109/WCNC.2007.191

Filename

4224436