Characterization of Polarization Diversity at the Mobile

Abstract

Abstract-Two new models to characterize polarization diversity at the mobile are presented and discussed. The first model builds upon existing theoretical models at the base station to demonstrate how those principles apply to the mobile fading environment. Due to the limitations of antennas at the mobile, this extended model, though relevant, is not sufficient to characterize polarization diversity of the antennas so this paper moves on to show how a new approach to polarization diversity at the mobile exists as an inherent feature within an angular diversity system. Results show that, for two polarizations in a fading environment, the best overall output occurs with a ±45 o element configuration although the diversity combiner itself has optimum performance with a ±67.5 o configuration due to lower correlation at the input. The second model is also used to demonstrate how differently polarized dipoles are using polarization diversity inherent within an angular diversity system.

Evaluation of True Polarization Diversity for MIMO Systems

“…It is yet important to also note that the outperforming gain of TPD respect to OPD for reduced volumes shrinks with decreasing AS. This agrees well with the fact that a suitable level of scattering has to be made available to gain sufficient depolarization from a single polarization source [39].…”

Statistical Modeling of Dual-Polarized MIMO Land Mobile Satellite Channels

“…Several works such as [6]- [8], [17], [18] propose specific values for parameters , based on extensive measurement campaigns, which are also taken into account in this work for the specific considered scenario.…”

On the Benefits of Polarization for Fixed Area Television White Space Devices

“…The dipole is the best case scenario because it is more polarization pure than any other practical antenna which could be used on a WSD. This is comparable to polarization diversity systems whereby the polarization aspect is inherent within the angular system [17] and the measurements give an evaluation of whether a WSD with horizontal linear polarization will…”