NDLI: Impact of measurement errors on the closed loop power control for CDMA systems

Content Provider	IEEE Xplore Digital Library
Author	Li-Chun Wang Chih-Wen Chang
Copyright Year	2003
Description	Author affiliation: Nat. Chiao Tung Univ., Hsinchu, Taiwan (Li-Chun Wang; Chih-Wen Chang)
Abstract	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/sub FC/, a closed form formula for calculating P/sub FC/ with consideration of measurement errors is presented. Furthermore, we derive a bit error rate (BER) performance bound in terms of P/sub FC/ for the CDMA system with 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.
Starting Page	735
Ending Page	740
File Size	305819
Page Count	6
File Format	PDF
ISBN	0780377001
ISSN	15253511
DOI	10.1109/WCNC.2003.1200461
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-03-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Measurement errors Power control Multiaccess communication Bit error rate Performance analysis Analytical models Error correction Fading Probability Frequency
Content Type	Text
Resource Type	Article

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