Fundamental limitations of power control in W-CDMA

Author

Gunnarsson, Fredrik

Author_Institution

Div. of Control & Commun., Dept. of Electr. Eng., Linkoping, Sweden

Volume

2

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

630

Abstract

Power control is considered as an important means to combat near-far fading effects and maintain acceptable connections in wireless communications systems. When applying power control in practice, the performance is restricted by a number of fundamental limitations. Here, these are addressed from a control theory perspective. Limited update rate, limited feedback bandwidth, time delays, measurement errors, feedback errors and filtering effects among other aspects all affect the resulting performance, and are related to radio channel characteristics. Simulations further illustrate the hampering effects

Keywords

cellular radio; code division multiple access; delays; fading channels; feedback; power control; telecommunication control; W-CDMA; cellular radio; control theory; feedback bandwidth; feedback errors; filtering effects; measurement errors; near-far fading effects; power control; time delays; update rate; Bandwidth; Control theory; Delay effects; Error correction; Fading; Feedback; Measurement errors; Multiaccess communication; Power control; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2001. VTC 2001 Fall. IEEE VTS 54th

Conference_Location

Atlantic City, NJ

ISSN

1090-3038

Print_ISBN

0-7803-7005-8

Type

conf

DOI

10.1109/VTC.2001.956846

Filename

956846