標題: Impact of measurement errors on the closed loop power control for CDMA systems
作者: Wang, LC
Chang, CW
交大名義發表
National Chiao Tung University
關鍵字: CDMA system;power control;measurement error
公開日期: 2003
摘要: In this paper we present a simple analytical model to evaluate the impact of measurement errors on the closed-loop power control for code division multiple access (CDMA) systems. By introducing a new performance measurement, the probability of false command in power control, P-FC, a closed form formula for calculating P-FC with consideration of measurement errors is presented. Furthermore, we drive a bit error rate (BER) performance bound in terms of P-FC for the CDMA system with the closed-loop power control (CLPC). The proposed analytical approach can quantitatively evaluate the performance of the CLPC taking into account of the effects of measurement errors and Doppler frequency under a Rayleigh fading channel. Through simulation and analysis, we show that the proposed analytical BER bound can accurately estimate the BER performance of the CLPC under the impact of measurement errors. Interestingly, we find that the CLPC is less sensitive to measurement errors due to the non-linear operation in the one step up/down power control scheme compared with the variable-step size power control.
URI: http://hdl.handle.net/11536/18668
ISBN: 0-7803-7700-1
ISSN: 1525-3511
期刊: WCNC 2003: IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE RECORD, VOLS 1-3
起始頁: 735
結束頁: 740
顯示於類別:會議論文