Radio resource allocation in OFDMA multihop cellular cooperative networks

Multihop cellular networks (MCNs) is an extension of single hop cellular networks (SCNs) having benefits of a fixed base station and flexible ad hoc networks. The radio resource management becomes more complex to deal with the routing and resource allocation jointly. In this paper, we have proposed the algorithm which solves the joint subchannel allocation, routing and power allocation problem in OFDMA MCNs. Optimization problem has been decomposed into two subproblems: (1) subchannel allocation problem; (2) routing and power allocation problem, and solved by iterative two-step approach. The simulation results showed that the average total utility increases and the increment of the utility decreases as the number of hops increases.