Matched filters for locked and unlocked interferers in DS-CDMA

Author

Yoon, Young C. ; Leib, Harry

Author_Institution

Dept. of Electr. Eng., McGill Univ., Montreal, Que., Canada

fYear

1995

fDate

17-19 May 1995

Firstpage

449

Lastpage

452

Abstract

This paper investigates the design of matched filters (MF) for direct-sequence code-division multi-access (DS-CDMA) systems. We extend the work of Monk et al. (see IEEE J. Select. Areas Commun., vol.SAG-12, no.5, p.817-827, 1994) by assuming the availability of more information such as the individual powers and time delays of strong interferers. This extension permits the design of MFs which can specifically reduce the effects of locked interferers. Results for the rectangular chip pulse illustrate the signal to noise ratio (SNR) improvement the proposed MF gives over the conventional MF and noise-whitening MF

Keywords

code division multiple access; filtering theory; matched filters; pseudonoise codes; radiofrequency interference; spread spectrum communication; DS-CDMA; SNR; direct-sequence code-division multi-access; locked interferers; matched filters design; noise-whitening matched filter; rectangular chip pulse; signal to noise ratio; strong interferers; time delays; unlocked interferers; Additive white noise; Degradation; Delay effects; Detectors; Gaussian noise; Matched filters; Multiaccess communication; Signal design; Signal processing; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Computers, and Signal Processing, 1995. Proceedings., IEEE Pacific Rim Conference on

Conference_Location

Victoria, BC

Print_ISBN

0-7803-2553-2

Type

conf

DOI

10.1109/PACRIM.1995.519566

Filename

519566