부산대학교 도서관

In this paper, propagation measurements of a quad-polarized multiple-input multiple-output (MIMO) channel are conducted in different multipath environments, including a realistic office room with different transmission distances and the reverberation chamber (RC), and the Rician K-factors and fading characteristics are analyzed based on the measured channel data. It is found that the Rician K-factor and channel distribution highly depend on the scattering components of different multipath environments. In the rich multipath environment, the scattered components make the strongest contribution, leading to a small K-factor, and the quad-polarized channel is better fitted as the Rayleigh distribution. With the enhancement of the contribution of direct components in total received signal, the K-factors become larger, and the channel varies from Rayleigh to Rician channel. Moreover, the differences of the K-factors between different polarizations become larger in the less scattered environment, which indicates the K-factor is also influenced by the polarization and radiation characteristics of the antennas.