Investigation of Compatibility Between IMT-Advanced Systems Operating in Band 3300–3400 MHz and Airborne Radiolocation Radar Systems Operating in Adjacent Band below 3 300 MHz.

Abstract

The last decade has witnessed a tremendous evolution in mobile technology as a result of increase in demand for new mobile services and capabilities. This growth has led to the development of IMT-Advanced and conceptualization of IMT-2020, which is still being standardized. In order to accommodate this increased demand for mobile technologies, these systems need additional spectrum. One of the bands being considered for IMT-Advanced services under WRC-15 agenda item 1.1 in addition to the existing bands is 3300-3400 MHz because low frequency spectrum (below 6GHz) is absolutely essential for and economical delivery of mobile services. However, the frequency band 3100-3400 MHz is currently allocated worldwide to the radiolocation service on a primary basis. In the light of maintaining spectrum discipline, there is need to investigate the compatibility between the IMT-Advanced system to be introduced into the frequency band and the radiolocation systems currently occupying that frequency band as well as the radiolocation systems currently occupying the adjacent frequency band both below and above. In this research paper we investigate the compatibility between IMT-Advanced systems operating in frequency band 3300–3400 MHz and airborne radiolocation radar operating in adjacent frequency band 3100–3300MHz.The Spectrum Engineering Advanced Monte Carlo Analysis Tool (SEAMCAT) was used for statistical analysis as well as to determine the probability of interference from unwanted emissions and blocking noise from the IMT-Advanced base stations which is the interfering link to the radiolocation radar system. The result showed that IMT-Advanced system will cause harmful interference to airborne radiolocation radar if the band 3300 – 3400 MHz is allocated to IMT systems.Â