Performance Analysis of SIR-Based Closed-Loop Power Control with Feedback Errors

Andrea ABRARDO  Giovanni GIAMBENE  David SENNATI  

IEICE TRANSACTIONS on Communications   Vol.E85-B   No.5   pp.872-881
Publication Date: 2002/05/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Wireless Communications Issue)
code division multiple access (CDMA),  power control technique,  radio resource management,  

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This paper deals with a cellular system based on Code Division Multiple Access (CDMA) and investigates the performance of Signal-to-Interference (SIR)-based Closed Loop-Power Control (CLPC) schemes taking into account errors on the feedback channel that conveys the power control command from the base station to the mobile terminals. We have evaluated both the distribution of the received power at the base station and the optimum control step size that minimizes the Control Error (CE) standard deviation, a useful measure of the CLPC performance. The impact of interference variations has been deeply investigated for different mobility scenarios and for different feedback channel error conditions.