An Unbiased Signal-to-Interference Ratio Estimator for the High Speed Downlink Packet Access System

ETRI Journal

关键词: maximal ratio combining;    adaptive modulation and coding;    high speed downlink packet access;    multiple transmit and receive antennas;    Signal-to-interference ratio;   

Others  :  1184787
DOI  :  10.4218/etrij.03.0203.0006

【 摘 要 】

We propose an unbiased signal-to-interference ratio (SIR) estimator for the high speed downlink packet access (HSDPA) system. The proposed SIR estimator solves the problem of underestimation present in conventional SIR estimators and is suitable for channel quality measurement in the adaptive modulation and coding scheme of HSDPA, which requires accurate SIR estimation for optimum adaptive modulation and coding selection. Our analysis and simulation results demonstrate the improved estimation performance of the proposed SIR estimator.

   

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