Performance improvement of closed-loop power control in CDMA cellular mobile communication systems

Author

Shen, Qiang ; Krzymien, Witold A.

Author_Institution

TRLabs, Edmonton. Alta., Canada

Volume

1

fYear

1996

fDate

28 Apr-1 May 1996

Firstpage

56

Abstract

The impairments in the current closed-loop power control for the reverse link of the IS-95 CDMA system are investigated, and an improved scheme is proposed using linear prediction and multi-step power control at the mobile station. This method does not require a modification of the mobile and base station air interface standard. The correlation property of the accumulated power control signals is briefly discussed. Simulations conducted for the reverse link have shown that by improving the performance of the closed-loop power control, the reverse link overall performance is improved considerably

Keywords

cellular radio; closed loop systems; code division multiple access; power control; prediction theory; radio links; telecommunication control; telecommunication standards; CDMA cellular mobile communication systems; IS-95 CDMA system; base station air interface standard; closed loop power control; linear prediction; mobile station; multistep power control; performance improvement; power control signals; reverse link; simulations; Base stations; Delay; Error correction; Fading; Fluctuations; Mobile communication; Multiaccess communication; Power control; Power generation; Shadow mapping;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1996. Mobile Technology for the Human Race., IEEE 46th

Conference_Location

Atlanta, GA

ISSN

1090-3038

Print_ISBN

0-7803-3157-5

Type

conf

DOI

10.1109/VETEC.1996.503407

Filename

503407