Cellular multicode CDMA capacity for integrated (voice and data) services

Author

Ayyagari, Deepak ; Ephremides, Anthony

Author_Institution

GTE Labs. Inc., Waltham, MA, USA

Volume

17

Issue

5

fYear

1999

fDate

5/1/1999 12:00:00 AM

Firstpage

928

Lastpage

938

Abstract

This paper analyzes the capacity of a multicode direct sequence-code division multiple access (DS-CDMA) cellular architecture supporting integrated (voice and data) traffic. The capacity estimate (on the uplink) is the number of voice users and data users, at different data rates, that the system can support with quality-of-service (QoS) guarantees (frame error rates (FER), outage probability). This estimate is based on an interference analysis that considers both perfect and imperfect power control, different user distributions in the cell, and the coverage trade-off resulting from hand-set power limitations. Localized interference from high speed data (HSD) users, combined with the effects of power control, adversely impacts voice capacity. The analysis investigates the effect of two important factors on capacity: (1) received power levels for the different classes of users and (2) data user activity. The results obtained are useful in designing power allocation and burst-level admission control strategies to optimize the capacity

Keywords

cellular radio; channel capacity; code division multiple access; error statistics; integrated voice/data communication; power control; quality of service; radio links; radiofrequency interference; spread spectrum communication; telecommunication congestion control; telecommunication traffic; QoS guarantees; burst-level admission control; capacity estimate; cellular architecture; cellular multicode CDMA capacity; coverage trade-off; data rates; data user activity; direct sequence-code division multiple access; frame error rates; hand-set power limitations; high speed data; imperfect power control; integrated traffic; integrated voice/data services; interference analysis; localized interference; outage probability; perfect power control; power allocation; quality-of-service; received power levels; uplink; user distributions; voice capacity; Admission control; Capacity planning; Data analysis; Design optimization; Error analysis; Interference; Multiaccess communication; Power control; Quality of service; Speech analysis;

fLanguage

English

Journal_Title

Selected Areas in Communications, IEEE Journal on

Publisher

ieee

ISSN

0733-8716

Type

jour

DOI

10.1109/49.768206

Filename

768206