Energy Efficient OFDM Relay Systems

  title={Energy Efficient OFDM Relay Systems},
  author={Can Sun and Yuanjing Cen and Chenyang Yang},
  journal={IEEE Transactions on Communications},
In this paper, we study energy efficient orthogonal frequency division multiplexing (OFDM) relay system, where two source nodes communicate with each other via a half-duplex amplify-and-forward relay node. We aim to maximize the energy efficiency (EE), where both the transmit and circuit power consumptions are taken into consideration. To this end, we optimize the active number of subcarriers and the number of bits to each subcarrier at the two source nodes. The optimal solution turns out to be… CONTINUE READING
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