Performance Evaluation of Centralized Control Algorithm for Channel Allocation in Pico-Cell System

In a pico-cell architecture, co-channel interference between adjacent cells can cause serious problems. With a centralized control approach based on interference information reported by each subscriber station (SS), we propose a novel channel allocation algorithm applying the graph theory. This method directly determines the optimal channel allocation and minimizes inter-cell co-channel interference. Both computer simulations and experiments based on the implementation demonstrate that our proposed algorithm is effective.