Networking

Energy Efficient Communications Over the AWGN Relay Channel

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Executive Summary

This paper addresses the energy efficiency analysis of the relay channel under additive white Gaussian noise. The authors consider the rate bounds given by decode and forward and the cut set bound and assume that resources are optimally allocated to maximize the rate according to the channel information and the total network energy. Provided that, in this case, the energy efficient regime is the low energy regime, low energy analysis tools are used to compute the maximum Rate Per Energy (RPE) and the slope of spectral efficiency with respect to the energy per bit. Using these metrics, the impact of actual practical constraints is investigated.

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