Power control and rate allocation in multirate wideband CDMA systems

Author

Mark, Jon W. ; Zhu, Shihua

Author_Institution

Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada

Volume

1

fYear

2000

fDate

2000

Firstpage

168

Abstract

As a multiple access technology, DS-CDMA operates in an interference limited environment so the system capacity is dominated by multiple access interference (MAI). Since MAI is proportional to the transmit power strengths of other users, the level of transmit power by all participating users requires careful planning and control in order to attain maximum system capacity. The power distribution under a multirate wideband CDMA environment is investigated. It is shown that power control is a function of the spread bandwidth, user data rates, and the user QoS requirements. A power control algorithm, based on a convergence criterion, is proposed. Numerical results which demonstrate the viability of the power control algorithm are presented

Keywords

broadband networks; code division multiple access; convergence of numerical methods; land mobile radio; multiuser channels; power control; quality of service; radio networks; radiofrequency interference; spread spectrum communication; telecommunication congestion control; telecommunication control; DS-CDMA; call admission algorithm; convergence criterion; interference limited environment; maximum system capacity; multiple access interference; multiple access technology; multirate wideband CDMA systems; power control algorithm; power distribution; rate allocation; spread bandwidth; system capacity; third generation systems; transmit power strength; user QoS requirements; user data rates; Bandwidth; Capacity planning; Control systems; Multiaccess communication; Multiple access interference; Power control; Power distribution; Power system planning; Proportional control; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Confernce, 2000. WCNC. 2000 IEEE

Conference_Location

Chicago, IL

ISSN

1525-3511

Print_ISBN

0-7803-6596-8

Type

conf

DOI

10.1109/WCNC.2000.904621

Filename

904621