Delay-aware energy-efficient communications over Nakagami-m fading channel with MMPP traffic

In this paper, we propose an energy efficient cross-layer design framework for transmitting Markov modulated Poisson process (MMPP) traffic over Nakagami-m fading channel with delay demands. The adaptive modulation and coding (AMC) is used at physical layer. We first investigate the stationary distribution of this system. With the stationary distribution and the AMC transmission mode, we derive the close-form expression of the delay and the energy efficiency. Then, we derive the energy efficient thresholds to choose the transmission mode. At last, we get the energy efficient transmission policy with delay constraint for given traffic. Numerical results are provided to support the theoretical development.