کنفرانس مهندسی برق ایران

صفحه اصلی / سی و چهارمین کنفرانس بین المللی مهندسی برق

Novel XPD Characterization in 5G/6G Channels via Electromagnetic Scattering From Accelerated Dielectric Particles

نویسندگان :

Anis Darbandi¹ Ali Pourziad² Saeid Nikmehr³

1- دانشکده مهندسی برق و کامپیوتر،دانشگاه تبریز، تبریز، ایران 2- دانشکده مهندسی برق و کامپیوتر،دانشگاه تبریز، تبریز، ایران 3- دانشکده مهندسی برق و کامپیوتر، دانشگاه تبریز، تبریز، ایران

کلمات کلیدی :

Electromagnetic scattering،Cross-polarization discrimination (XPD)،Moving dielectric particles،; Mie theory with Lorentz corrections،5G/6G millimeter-wave propagation

چکیده :

This study investigates electromagnetic wave scattering from moving ensembles of dielectric spheres, representing dust or aerosol clusters, with a focus on polarization behavior and cross-polarization discrimination (XPD). We integrate classical Mie theory with Lorentz corrections and a novel Taylor-series expansion for the time-dependent velocity ratio β(t)=v(t)/c, capturing both constant velocity and uniform acceleration effects. Second-order multiple scattering is included to account for inter-particle interactions in dense, randomly distributed ensembles. Time-resolved E-field waveforms are computed at a fixed observation point for three incident polarizations: linear along y, linear along z, and right-hand circular in the y–z plane. From these waveforms, amplitudes, phases, stokes parameters, and XPD are extracted and compared. The β(t) Taylor expansion efficiently corrects Doppler and Lorentz terms without full relativistic calculations. Numerical results show that motion and acceleration induce measurable time-varying XPD and phase changes, multiple scattering increases cross-polar leakage under certain conditions, and circular polarization is more robust against cross-polar effects than linear excitations. This framework provides a computationally efficient and physically consistent tool for analyzing polarization performance in wireless and satellite links operating in dusty, dynamic atmospheres, informing design choices for polarization-sensitive communication and remote-sensing systems.