Research on Factors Affecting Communication Quality in Communication System

Abstract

The capacity of wireless communication system plays an important role in performance, and frequency reuse can improve the system capacity to a certain extent. In order to solve the problem that there are not enough frequency channels for too many users. This work starts with the frequency reuse. An integer frequency reuse (IFR) in 19-cell system network and a fractional frequency reuse (FFR) in 19-cell system network and variation of other factors are analyzed to illustrate the different effects of different frequency reuses on network capacity. Through MATLAB simulation network, the system capacity is calculated, different methods are designed, and the influence of different parameters on system performance is verified, such as cell radius and signal-to-noise ratio. Different methods are selected according to the model to increase the system capacity and optimize the system. After that Simultaneous water-filling (SWF) is also introduced for subsequent optimization, so that network capacity gets a better result.