Improving transmit power control performance for WCDMA systems

Author

Chiu, Che-Sheng

Author_Institution

Chunghwa Telecom Labs., Taiwan

Volume

3

fYear

2002

fDate

27-30 Oct. 2002

Firstpage

926

Abstract

Transmit power control is an important issue in the WCDMA digital cellular system. This paper proposed a new, adaptive channel energy prediction (CEP) based power control algorithm for WCDMA system by which the future channel energy is predicted using MMSE criterion. The performance of power control algorithms that recommended by 3GPP and the proposed method are compared in different mobile speeds. It is shown from our simulations that the CEP-based power control strategy has looser E_b/N₀ requirement and it helps to increase the uplink capacity and extend the cell coverage when compared with the 3GPP-based method in slow and medium mobile speeds.

Keywords

3G mobile communication; broadband networks; cellular radio; channel capacity; code division multiple access; least mean squares methods; multiuser channels; power control; radio links; radio networks; telecommunication control; 3GPP; MMSE; WCDMA digital cellular system; WCDMA systems; adaptive channel energy prediction; cell coverage; channel energy; mobile speed; power control algorithm; simulations; transmit power control performance; uplink capacity; Adaptive control; Bit error rate; Computational modeling; Fading; Multiaccess communication; Power control; Programmable control; Propagation delay; Quality of service; Radio transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on

ISSN

1347-6890

Print_ISBN

0-7803-7442-8

Type

conf

DOI

10.1109/WPMC.2002.1088313

Filename

1088313