Polarization diversity for multiband UWB systems
Signal Processing - Signal processing in UWB communications
Optimal polarized beampattern synthesis using a vector antenna array
IEEE Transactions on Signal Processing
Polarization measurements and modeling in indoor NLOS environments
IEEE Transactions on Wireless Communications
Los and Nlos channel capacities for MIMO polarization diversity
ICCOM'06 Proceedings of the 10th WSEAS international conference on Communications
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Dual-polarized antennas are traditionally characterized in terms of port-to-port isolation and co- and cross-polar radiation patterns. For base station antennas in a mobile communications system, the critical parameter is instead the far-field coupling between the two channels. In a mobile communication system, base station antennas with a nominal ±45° to vertical linear polarization are commonly used. Such antennas are difficult to design with constant polarization characteristics in azimuth. We calculate the antenna output power correlation and diversity gain under Rayleigh fading conditions and different values of the environment cross-polar discrimination. Two different antennas are compared: a dual-polarized aperture coupled patch and a slanted dipole configuration, both over an infinite groundplane. We show that the aperture coupled patch provides lower output correlation and higher diversity gain than the slanted dipoles in all investigated cases