Adaptive Power Control using Channel State Information Gradient for Mobile Radio Systems

Author

Wang, L. ; Tsimenidis, C.C. ; Adams, A.E.

Author_Institution

Sch. of Electr. & Electron. & Comput. Eng., Newcastle upon Tyne Univ.

Volume

1

fYear

2006

Firstpage

915

Lastpage

919

Abstract

In this paper, a new adaptive, closed-loop power control algorithm is proposed for wideband code-division-multiple-access (W-CDMA) communication systems. The adjustment of power is carried out through knowledge of the past values of signal strength and signal-to-interference ratio (SIR). The gradient nature of Rayleigh fading channel is estimated in order to alleviate the effect of fast fading and to enable the channel to be tracked more effectively, hence providing stable received signal power and SIR for each user. Simulation results show that the proposed algorithm has superior convergence performance compared to existing approaches

Keywords

Rayleigh channels; adaptive control; broadband networks; channel estimation; closed loop systems; code division multiple access; convergence; mobile radio; power control; radiofrequency interference; telecommunication control; Rayleigh fading channel; W-CDMA; adaptive control; channel estimation; channel state information gradient; closed-loop power control algorithm; code-division-multiple-access communication system; convergence performance; mobile radio system; signal strength; wideband system; Adaptive control; Channel state information; Convergence; Fading; Land mobile radio; Multiaccess communication; Power control; Programmable control; Rayleigh channels; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Information Networking and Applications, 2006. AINA 2006. 20th International Conference on

Conference_Location

Vienna

ISSN

1550-445X

Print_ISBN

0-7695-2466-4

Type

conf

DOI

10.1109/AINA.2006.74

Filename

1620303