Microwave Mobile Communications
Microwave Mobile Communications
On Limits of Wireless Communications in a Fading Environment when UsingMultiple Antennas
Wireless Personal Communications: An International Journal
Polarization behavior of discrete multipath and diffuse scattering in urban environments at 4.5 GHz
EURASIP Journal on Wireless Communications and Networking
IEEE Transactions on Wireless Communications
Dual-polarization versus single-polarization MIMO channel measurement results and modeling
IEEE Transactions on Wireless Communications
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In this paper, the impact of the polarization on the performance of the multiple-input multiple-output (MIMO) channel with cross-polarized antennas has been investigated based on the outdoor macrocell measurement at 2.53 GHz. A simple model which can capture the major characteristics of the cross polarized channel is proposed. The effective polarization rotation during the propagation is evaluated using the proposed model, and found to follow a bimodal Rayleigh distribution. The commonly accepted uniform distribution polarization rotation angle is a reasonable but coarse assumption compared with our estimated results. The vertical and horizontal polarization perform similarly in line-of-sight (LOS) scenario, but may be different in non-LOS (NLOS) scenario depending on the environment where the receiver is located. The polarization diversity outperforms the spatial diversity in LOS scenario, but shows relatively small gain in a rich scattering scenario. This is further proofed by the comparison of the capacity of a 4 × 4 MIMO channel with cross-polarized antennas.