Experimental Investigation of the Number of Independent Samples and the Measurement Uncertainty in a Reverberation Chamber
Journal article, 2013

Due to the complicated and time-varying boundary conditions, reverberation chamber (RC) measurements are usually studied using statistical analysis. Hence, it is of importance to know the number of independent samples of the measurements. Different methods for estimating the number of independent samples has been proposed in the literature. This paper uses the spatial degrees of freedom method to estimate the independent sample number. Comparing with the commonly used autocorrelation function method, the proposed method requires less computation time and provides a smaller estimation bias for correlated samples and a smaller estimation variance once above a certain sample number. The estimated independent sample number can be used to explain the dependences of the measurement uncertainty on frequency, mode stirrers, and RC loading. Finally, the estimated independent sample number is used to predict the standard deviation (STD) of the average power level for different loading configurations, where good agreements are observed.

independent sample number

Degrees of freedom (DoF)

standard deviation (STD)

reverberation chamber (RC)

Author

Chen Xiaoming

Chalmers, Signals and Systems, Communication and Antenna Systems, Antennas

IEEE Transactions on Electromagnetic Compatibility

0018-9375 (ISSN)

Vol. 55 5 816-824

Areas of Advance

Information and Communication Technology

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/TEMC.2013.2242473

More information

Created

10/6/2017