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Understanding the characteristics of spectrum utilization is essential in providing guidelines for resource allocation. In this paper, a detailed measurement analysis of spectrum efficiency is performed, with data collected from tens of thousands of base stations during fifteen months. We examine the characteristics of radio resource margins (RM) extensively, including its temporal skewness, diurnal...
this paper presented a new spatial and temporary correlation model under arbitrary scattering scenario in mobile network, and derived a general close-form expression by series expansion. Numerical results show that if the angle spread is large or the incidence angle is perpendicular to mobile direction, the correlation of received signal power will decrease rapidly. These numeric results are useful...
This paper discusses the radio channel modeling for MIMO Over-The-Air testing (OTA). The MIMO OTA is needed for the small devices testing, utilizing multiple antennas. The technologies that utilize multiple antennas are emerging technologies, such as LTE-A and WiMAX evolution (IEEE802.11m), but we also have seen tremendeous increase of MIMO in WLAN type of applications, like IEEE802.11n. This paper...
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