Variable-Rate Variable-Power MQAM for Energy Efficient Transmission over Fading Channels

Guo Wang Qiu; Feng Qi Yu

doi:10.4028/www.scientific.net/AMM.336-338.1694

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 336-338Variable-Rate Variable-Power MQAM for Energy...

Variable-Rate Variable-Power MQAM for Energy Efficient Transmission over Fading Channels

Abstract:

Wireless communication devices are often battery-powered. Reducing energy consumption during transmission has become a major challenge. We propose an optimal adaptation scheme and a suboptimal scheme based on the continuous-power discrete-rate adaptation (CPDR) for energy efficient transmission over fading channels. In our proposed schemes, we optimize the average transmit power according to data rate of the source node and buffer level, and then we adapt the transmit rate and power according to the CPDR scheme. Simulation results show that our proposed schemes have outstanding performance on energy-saving.

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Periodical:

Applied Mechanics and Materials (Volumes 336-338)

Pages:

1694-1698

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.336-338.1694

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Online since:

July 2013

Authors:

Guo Wang Qiu, Feng Qi Yu

Keywords:

Adaptive Modulation, Energy Efficient, Fading Channel

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