Mapping functions for successive interference cancellation in CDMA

Author

Sugimoto, Hiroki ; Rasmussen, Lars K. ; Lim, Teng J. ; Oyama, Takashi

Author_Institution

Iki Techno Centre (S´´pore) Pte Ltd., Singapore

Volume

3

fYear

1998

fDate

18-21 May 1998

Firstpage

2301

Abstract

Cancellation schemes for CDMA detection are based on estimating and removing the inherent multiple access interference. Several strategies for estimating the interference have been suggested, In this paper, we consider successive cancellation based on linear soft-decision, hard-decision, and clipped soft-decision. The influence of the cancellation function on the corresponding decision boundaries is discussed and qualitative statements regarding BER performance is made. BER performance based on computer simulations are presented and the “optimal” choice of the parameters for the clipped soft-decision is considered

Keywords

code division multiple access; decision theory; error statistics; interference suppression; land mobile radio; radiofrequency interference; BER performance; CDMA; cancellation function; clipped soft-decision method; decision boundaries; hard-decision method; linear soft-decision method; mapping functions; multiple access interference; successive interference cancellation; Bit error rate; Detectors; Interference cancellation; Matched filters; Multiaccess communication; Multiple access interference; Silicon carbide; Space technology; Statistics; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1998. VTC 98. 48th IEEE

Conference_Location

Ottawa, Ont.

ISSN

1090-3038

Print_ISBN

0-7803-4320-4

Type

conf

DOI

10.1109/VETEC.1998.686168

Filename

686168