Cross-Polarization Discrimination in Vehicle-to-Vehicle Channels: Geometry-Based Statistical Modeling

Abstract

A new three-dimensional (3-D) geometry-based reference model for cross-polarization discrimination (XPD) is proposed for narrow-band vehicle-to-vehicle (V2V) channels. The model is based on the superposition of polarization components on conservation-of-polarization planes (CoP-planes). This novel approach is used to derive the XPD at each distance. To the best of our knowledge this is the first purely theoretical geometrybased XPD reference model of V2V channels. Using our reference model, we obtain a relationship between XPD and channel modeling factors such as the distance between the transmitter (Tx) and the receiver (Rx), the azimuth/elevation angles of arrival and departure (A/E-AoA and A/E-AoD), multipath delays, and the distribution of scatterers. The proposed XPD reference model for V2V channels is based on and extended from our previous XPD reference model for fixed-to-fixed/mobile (F2F/F2M) channels. Our analytical XPD model reveals valuable XPD properties that expose the potential of utilizing polarization diversity in V2V communication systems.

A Novel MIMO Channel Model for Congested Communication Environments

“…The authors in [11]- [14] proposed a series of 3D geometry-based scattering channel models for micro-cell environments; however, they did not discuss the time-varying characteristics of the MIMO channels. A 3D geometric channel model was constructed in [15] and [16], based on the cross-polarization identification for narrow-band wireless models, without considering the time-varying channel characteristics. The studies in [17] showed that the above-mentioned models could not be used to accurately describe the urban street V2V scattering environments, because the scattering distributions of those models were generally distributed around the transmitters or receivers, which belonged to omnidirectional scattering scenarios.…”

Space-Polarization Division Multiple Access System with Limited Feedback

“…Various studies have been done about channel modeling, channel measurement, and transmit schemes for the dual-polarized antenna arrays: [2] modeled dual-polarized multiple-input and multiple-output (MIMO) channels in a matrix form whose elements represent the Rician fading effect. [3] modeled three dimensional dual-polarized MIMO channels. [4] and [5] derived the spatial correlation between dual-polarized antennas.…”