Title | Second-Order Statistics of Polarization State Dispersion by Narrowband Ricean Fading Channels |
Publication Type | Conference Paper |
Year of Publication | 2008 |
Authors | Sivertsen, K. N., A. Liou, and D. G. Michelson |
Conference Name | Vehicular Technology Conference, 2008. VTC 2008-Fall. IEEE 68th |
Pagination | 1 -5 |
Date Published | sep. |
Keywords | adaptive antenna arrays, correlation methods, cross-correlation coefficient, narrowband Ricean fading channels, Poincare sphere, polarisation, polarization adaptive antennas, polarization state dispersion, Ricean K-factors, Rician channels, second-order statistics |
Abstract | We have determined the form of the distributions that best describe the manner in which polarization states disperse across the Poincare sphere over time, i.e., the second- order statistics of dispersion, and how the parameters of these distributions are related to the Ricean K-factors and the cross- correlation coefficient that describe the diversity channel. When sampled over time, the trajectory taken by the polarization states resembles a random walk across the sphere. Of particular note is our observation that the form of the turning angle distribution provides a mechanism that constrains the size of the polarization cluster when the Ricean K-factors and cross-correlation between diversity branches are both high. The results will be of interest to those engaged in the design of polarization adaptive antennas and methods for simulating polarization dispersion. |
URL | http://dx.doi.org/10.1109/VETECF.2008.35 |
DOI | 10.1109/VETECF.2008.35 |