Asymptotic and Finite User PER Analysis of Successive Interference Cancellation for DS-CDMA

Author

Sala, Josep ; Villares, Javier ; Rey, Francesc

Author_Institution

Dept. of Signal Theor. & Commun., Tech. Univ. of Catalonia, Barcelona, Spain

Volume

15

Issue

11

fYear

2011

fDate

11/1/2011 12:00:00 AM

Firstpage

1145

Lastpage

1147

Abstract

An expression is derived for the average Packet Error Rate (PER) of a Successive Interference Canceller (SIC) for DS-CDMA when the number of users asymptotically tends to infinity. The asymptotic probability density function of the interference power is governed by a Fokker-Planck differential equation with drift and (asymptotically vanishing) diffusion depending on the PER function of the adopted forward error correcting code (FEC). In addition to the asymptotic solution for the PER, a particle-based algorithm is also developed for computing efficiently the PER in the finite user case.

Keywords

code division multiple access; differential equations; forward error correction; interference suppression; probability; radiofrequency interference; spread spectrum communication; DS-CDMA; FEC code; Fokker-Planck differential equation; SIC; asymptotic probability density function; asymptotic user PER analysis; average PER; average packet error rate; finite user PER analysis; forward error-correcting code; particle-based algorithm; successive interference cancellation; Differential equations; Error analysis; Error probability; Interference cancellation; Multiaccess communication; Silicon carbide; CDMA; Fokker-Planck equation; Successive interference cancellation; packet error rate; particle;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2011.090911.111437

Filename

6042289