Sub-Carrier Channel Assignment for Cellular System with Two-Hop Fixed Relay Stations
Weiling Wu · Journal of Jilin University · 2007
In the cellular network with two-hop fixed relay stations,a new wireless channel allocation scheme is proposed for time-variety and non-uniform traffic distribution on the condition of frequency reuse factor being equal to one.According to this scheme,the co-channel interference distance among different stations could be guaranteed efficiently without the cooperation among Base Stations(BSs).Analysis and simulation results show that,the proposed scheme can improve the average spectrum efficiency for non-uniform traffic distributions,compared with the traditional sub-carrier channel assignment scheme in the cellular network with two-hop fixed relay stations.Especially the average spectrum efficiency gain may reach three times when the mobile stations are closer to the cell boundary.