Limited linear cancellation of multiuser interference in DS/CDMA asynchronous systems

Author

Bravo, Ángel M.

Author_Institution

Dept. of Teoria de la Senal y Comunicaciones, Valladolid Univ., Spain

Volume

45

Issue

11

fYear

1997

fDate

11/1/1997 12:00:00 AM

Firstpage

1435

Lastpage

1443

Abstract

This paper presents a linear cancellation detector for the Gaussian channel, operating over limited time intervals of the received signal, in a similar way to a multiinput multioutput finite-impulse response (FIR) filter. The parameters defining the detector become time invariant, and the conditions to be met by the signatures are stated. A bound for the multiuser interference due to the limited time correlation, and upper and lower bounds for the error probability are obtained. The theoretical bounds and numerical results show that the detector is adequate for systems intended for many users whose amplitudes can be restricted to a given range

Keywords

FIR filters; Gaussian channels; code division multiple access; coding errors; correlation methods; error statistics; filtering theory; interference suppression; probability; pseudonoise codes; radiofrequency interference; signal detection; spread spectrum communication; DS/CDMA asynchronous systems; FIR filter; Gaussian channel; Gaussian channels; error probability; limited linear cancellation; limited time correlation; limited time intervals; linear cancellation detector; lower bounds; multiinput multioutput finite-impulse response filter; multiuser interference; received signal; signatures; time invariant parameters; upper bounds; Decorrelation; Delay; Detectors; Finite impulse response filter; Gaussian channels; Gaussian noise; Interference cancellation; Multiaccess communication; Nonlinear filters; Power control;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.649766

Filename

649766