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Results of Suburban Base Station Spatial Diversity Measurements in the UHF Band

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2 Author(s)
Sang-Bin Rhee ; Bell Labs., Whippany, N. J. ; Zysman, G.

Base station spatial diversity measurements at 821 MHz have been performed in a New Jersey suburban area using directional antennas separated by 3.4, 6.6, and 10 wavelengths. The cross-correlation coefficients between the signals received by pairs of antennas have been computed as a function of antenna height, antenna separation, and signal polarization. Both vertical and horizontal antenna spacings have been investigated. The cross-correlation coefficients were obtained by measurements in ten different probe areas, ranging from 1 to 5 miles in distance from the base station. Results of the measurements indicate that for vertically polarized antennas 100 ft above ground level, an antenna separation of 6-7 wavelengths in the horizontal plane provides sufficient signal decorrelation for satisfactory diversity operation.

Published in:

Communications, IEEE Transactions on  (Volume:22 ,  Issue: 10 )