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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