Abstract
A theoretical channel model is proposed to study the probability of error and channel capacity of multipolarization antenna systems for downlink mobile communications. The effect of scattering on polarization is first studied based on Fresnel reflection law. Expressions for correlation between antennas at both sides are derived for different polarizations. To simplify the analysis, it is assumed that there is only a single reflection and the path angular spread at the base station is approximately zero. Next, the probability of error and channel capacity are studied numerically for different antenna configurations. The impact of scattering environment on performance is also investigated. It is found that when a three-branch orthogonal structure is used for diversity at the mobile station, the error probability is invariant to receiver orientations, and the improvement is insignificant for more receive antennas. At the base station, both probability of error and channel capacity are substantially improved by using two transmit antennas that produce orthogonal polarizations in the direction of the mobile station, and the performance is invariant to rotations of the two transmit antennas. In addition, for almost all configurations, the performance becomes better in general for larger angular spread of reflectors.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
