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Analytical Performance of Closed Loop Power Control Quantized under Fast Fading for CDMA Techniques

By S Nourizadeh, T Jeans and R Tafazolli


The performance of SIR-based Closed Loop power control (CLPC) is analytically analysed. The evaluation work has been carried out using the standard deviation of the power control error (PCE) as the performance metric. A non-linear control theory method is applied to the feedback system under fast fading. An analytical expression of the CLPC under fast fading is also produced. Finally a quantized-step size power control algorithm, replacing the hard limiter is considered. The proposed method is found to work\ud considerably better for high speed MS as well as being a\ud powerful tool to optimise the loop performance

Publisher: Institute of Electrical and Electronics Engineers
Year: 2003
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