Subchannel allocation based on graph theory in a single cell of WRAN
Yingting Liu, Hailin Zhang, Xiaofeng Lu, Shuhua Liu · 2011
Based on the analysis of the interference between the Base Station (BS) to wireless microphones (WMs) and Consumer Premise Equipments (CPEs) to WMs in Wireless Regional Area Network (WRAN), a new WRAN-WM coexistence model is proposed. A mathematical model of subchannel allocation in a single cell of WRAN is established which target is maximizing the data transmission rate for downlink of system. Modeling the subchannel allocation as finding a maximal matching of the bipartite graph, we get the optimal solution to employ hungarian algorithm to solve the problem which is a mixed-integer nonlinear programming. The simulation results show that the proposed scheme is very effective.