Coexistence Analysis between IMT-Advanced System and Fixed Satellite Service System

With the fast development of wireless communication, IMT-Advanced system will be deployed in 3400-3600 MHz in the foreseeable future, bringing in a problem with coexistence between IMT-Advanced system and Fixed Satellite Service (FSS). In this paper, the coexistence problem is tackled using stochastic geometry. Firstly, the aggregate interference from IMT-Advanced BSs to FSS earth station is deduced with BSs following Poisson distribution in the geographical domain. However, the aggregate interference is difficult to analyze due to the multiple integral. Using a statistical method called Lilliefors test, we prove the aggregate interference distribution can be approximately Gaussian with considerable accuracy. Then the mean and variance of the aggregate interference are provided in closed form to simplify the outage probability. Finally, simulation is conducted to prove the accuracy of replacing traditional time consuming Monte Carlo simulation with the theoretical method and the protection criteria are provided for the coexistence of the two systems.