A New User Mobility Based Adaptive Power Control in CDMA Systems

HyeJeong LEE  Dong-Ho CHO 

Publication
IEICE TRANSACTIONS on Communications  Vol.E86-B  No.5  pp.1702-1705
Publication Date: 2003/05/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Terrestrial Radio Communications
Keyword: 
power control,  adaptive step size,  mobile velocity, 

Full Text: PDF(306.7KB)

Summary: 
We propose a new closed-loop power control scheme for wireless mobile communication systems using an adaptive step size. The proposed scheme selects the basic power control step size by considering the speed of the mobile station and a variable step size by using instantaneous companding logic based on power control command bit patterns. We show its improved performance in view of the standard deviation of received power at the base station in consideration of channel BER.