Adaptive polarization diversity system

Details Adaptive polarization diversity system Adaptive polarization diversity system

1995-12-22

1997-11-25

Tarcza, Thomas H.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including polarized signal communication transmitter or...

342362, 342363, 342188, H01Q 2106, H01Q 2124

Patent

active

056917279

ABSTRACT:
An adaptive polarization diversity system for radio link communication. The system includes a base station antenna for transmitting either a clockwise polarized transmission or a counterclockwise polarized transmission, the transmission including a training pilot signal. The system further includes at least one subscriber unit for receiving the transmission, the unit including a first subscriber unit antenna for receiving a clockwise polarized transmission, a second subscriber unit antenna for receiving a counter-clockwise polarized transmission, and a dual channel receiver for adaptively combining the clockwise polarized transmission with the counterclockwise polarized transmission in proportion to first and second weights, respectively, the dual channel receiver determining the first and second weights so as to substantially optimally receive the training pilot signal.

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Vaughan, R.G., "Polarization Diversity in Mobile Communications", IEEE Transactions in Vehicular Technology, vol. 39 No. 3 (Aug. 1990).
Cox, D.C. et al, "Cross-Polarization Coupling Measured for 800 MHz Radio Transmission In and Around Houses and Large Buildings", IEEE Transactions on Antennas and Propagation, vol. AP-34, No. 1 (Jan. 1986).

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