Power imbalance effects on packet CDMA

Author

Kou, Chin Fong ; Leib, Harry

Author_Institution

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

Volume

14

Issue

9

fYear

1996

fDate

12/1/1996 12:00:00 AM

Firstpage

1830

Lastpage

1840

Abstract

This paper presents an analysis of packet code-division multiple-access (CDMA) with single user receivers and power level variations. The power level variations are due to imperfect power control. The teletraffic is modeled as an M/G/∞ queueing system. Average error rates and outage probabilities that a user sees are evaluated for a single cell CDMA system. The effects of power level variations are investigated using a combination of an approximation and an upper bound, and the loss in traffic capacity is evaluated. Numerical results for CDMA systems with different processing gains and coding gains are presented. It is shown that imperfect power control reduces significantly the CDMA teletraffic capacity, and much has to be gained by improving the power control schemes. The methods and results of this work could be used for quantifying the required accuracy of power control in CDMA and for evaluation of the capacity loss due to power control errors

Keywords

cellular radio; code division multiple access; packet radio networks; power control; probability; queueing theory; radio receivers; telecommunication control; telecommunication traffic; M/G/∞ queueing system; approximation; average error rates; coding gains; imperfect power control; outage probabilities; packet CDMA; packet code division multiple access; power control errors; power imbalance effects; power level variations; processing gains; single cell CDMA system; single user receivers; teletraffic; traffic capacity loss; upper bound; Communication system traffic control; Error analysis; Fading; Interference; Multiaccess communication; Power control; Power system modeling; Robustness; Speech; Traffic control;

fLanguage

English

Journal_Title

Selected Areas in Communications, IEEE Journal on

Publisher

ieee

ISSN

0733-8716

Type

jour

DOI

10.1109/49.545705

Filename

545705