Automatic on-off switching repeater for DS/CDMA reverse link capacity improvement

Author

Choi, Wan ; Cho, Bong Youl ; Ban, Tae Won

Author_Institution

Div. of Res. & Dev., KT Freetel, Seoul, South Korea

Volume

5

Issue

4

fYear

2001

fDate

4/1/2001 12:00:00 AM

Firstpage

138

Lastpage

141

Abstract

We propose an automatic on-off switching (AOS) repeater that is switched off automatically when there is no active user within its coverage. With the AOS repeater, we can reduce the unnecessary noise enhancement. The reverse link capacity of a DS/CDMA system with AOS repeaters is analyzed mathematically and compared with that of a system with conventional repeaters. Also, the AOS circuit in a repeater can protect the reverse link capacity of a DS/CDMA system from excessive noise enhancement by abnormal repeaters. From the numerical results, noticeable improvement with the AOS repeaters is shown.

Keywords

cellular radio; channel capacity; code division multiple access; multiuser channels; radio links; radio repeaters; spread spectrum communication; DS/CDMA reverse link capacity improvement; automatic on-off switching repeater; base station antenna; cellular radio; hexagonal cell structure; mobile stations; noise enhancement; perfect power control; uniform distribution; Background noise; Base stations; Circuit noise; Detectors; Multiaccess communication; Noise reduction; Power generation economics; Power system economics; Protection; Repeaters;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/4234.917093

Filename

917093