Estimating MIMO Capacities From Broadband Measurements in a Cellular Network

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The authors provide a new efficient method to evaluate spectral efficiencies from wireless channel soundings. Measurements are done in a limited cellular network using 3 sites with an ISD of 750 m. Each site has 3 sectors and is equipped with cross-polarized panel antennas. In the preprocessing phase, they take advantage of the high number of elements at the measurement array to compute a virtual cross polarized 2x2 setup with omni-directional coverage at the receiver. They then apply findings from the mid 1990s to de-noise the data by an adaptive thresholding method. This approach gains roughly 10 dB of SNR and enables one to evaluate capacities also for well shaded locations with a high path loss.