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Orthogonal Frequency Division Multiple Access (OFDMA) is an emerging multiple access technology. In this paper we consider OFDMA in the context of fixed wireless ad hoc networks. We address the problem of assigning subcarriers and hits to point-to-pointw ireless links in the presence off o-channel interference and Rayleigh fading. The objective is to minimize the total transmitted power over the entire network while satisfying as B constrained optimization problem and present a heuristic algorithm. The simulation results show that our algorithm results in an eflicient assignment of subcarriersa nd transmitter power levels in terms of the energy required for transmitting each bit of information.
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