Research on Spectrum Allocation Method in Cellular Mobile Communication System

In the modern cellular mobile communication system, the spectrum becomes more and more significant. How to allocate spectrum resource has been an important research issue. In this paper, some algorithms in the system are studied, Fractional Frequency Reuse and Integer Frequency Reuse 3 are used to combine to make a new method and simulate the capacity of our method. The performance of the system in a different environment with different users are also simulated. Then the capacity of the system is analyzed when the number of users keeps a fixed value. The simulation shows that the method that combining the Fractional Frequency Reuse and Integer Frequency Reuse method will show a better performance than a single method, for example, only Integer Frequency Reuse 3. This research also finds that the number of users will be limited if a perfect capacity is required.