Power distribution/allocation in multirate wideband CDMA systems

Author

Zhao, Lian ; Mark, Jon W. ; Ding, Jiu

Volume

5

Issue

9

fYear

2006

fDate

9/1/2006 12:00:00 AM

Firstpage

2467

Lastpage

2476

Abstract

A unified approach for power distribution and allocation in a multirate wideband CDMA system is investigated. It is shown that the traffic demand and the background disturbance fully govern the feasibility of the system and the optimal power distribution solutions, where the traffic demand is specified by the user QoS requirement, data rate, and spread spectrum bandwidth; the background disturbance includes the background noise and the intercell interference. Closed form expressions of the optimal power allocation, subject to power constraints in the practical system design, are derived. Convergent conditions are applied to evaluate the capacity region of the system. Numerical examples are provided to illustrate the applications of the obtained theoretical results.

Keywords

3G mobile communication; broadband networks; cellular radio; code division multiple access; matrix algebra; quality of service; radiofrequency interference; telecommunication traffic; QoS; background noise; code division multiple access; data rate; intercell interference; multirate wideband CDMA systems; power allocation; power distribution; quality of service; spread spectrum bandwidth; traffic demand; Background noise; Bandwidth; Facsimile; Interference constraints; Multiaccess communication; Multiple access interference; Power control; Power distribution; Spread spectrum communication; Wideband;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2006.1687770

Filename

1687770