Impact of depolarization effects on MIMO polarized wireless configuration

Kosai Raoof (1) , Nuttapol Prayongpun (1)

1 GIPSA-C2S - GIPSA - Communication, Signal et Sécurité

On wireless communication systems, multiple-input multiple-output (MIMO) systems have dramatically the potential to improve the reliability and the performance. However, the MIMO wireless channel performance is generally affected by the antenna array configuration and environment characteristic. This paper highlights the impact of angle spread and depolarization effects on the MIMO channel capacity with a focus on 4×4 uniform linear multi-polarized antenna array. We employ a geometric scattering model based on a three-dimensional double bouncing model that takes into account the antenna configurations. We investigate the use of multi-polarization configurations that can provide capacity improvement over conventional single-polarization configurations. The single-polarization configuration is dependent on the depolarization phenomena. It is found that when low depolarization and spatial corre-lation effects, the capacity of single-polarization con-figuration behaves better than that of multi-polarization configuration.

Mots clés: depolarization effects; Multiple-input multiple-output (MIMO) channel capacity; spatial correlation; multi-polarized antenna arrays

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Kosai Raoof, Nuttapol Prayongpun. Impact of depolarization effects on MIMO polarized wireless configuration. WiCOM 2007 - 3rd IEEE International Conference on Wireless Communications, Networking and Mobile Computing, Sep 2007, Shanghai, China. ⟨hal-00157937⟩