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GLOBECOM
2010
IEEE

Energy-Efficient Multi-Carrier Link Adaptation with Sum Rate-Dependent Circuit Power

10 years 10 months ago
Energy-Efficient Multi-Carrier Link Adaptation with Sum Rate-Dependent Circuit Power
Abstract--Energy-efficient link adaptation is studied for transmission on a frequency-selective parallel AWGN channel. The total power dissipation model includes a circuit power that varies with the sum rate and a power amplifier efficiency that varies with the bandwidth used. The mathematical analysis provides insight into how the subcarrier rates should be chosen for optimal energy efficiency and suggests a simple fixed-point algorithm that finds the solution in few iterations. Moreover, ways of improving the energy efficiency are discussed based on the dependence on bandwidth and distance between transmitter and receiver.
Christian Isheden, Gerhard Fettweis
Added 11 Feb 2011
Updated 11 Feb 2011
Type Journal
Year 2010
Where GLOBECOM
Authors Christian Isheden, Gerhard Fettweis
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