Delay and energy efficiency analysis of multicast cooperative ARQ over wireless networks

This paper investigates the performance of multicast cooperative ARQ (MCARQ) in wireless networks for reducing the system’s waiting time and the sum energy, where the delay and energy analytical model are proposed under equivalent service time and ideal Nyquist pulse. The packet transmission process is modulated by a three-state Markov chain, then the steady-state distribution of the MCARQ is obtained by solving the Markov chain. Further, the queue waiting time and energy efficiency of the multicast ARQ (MARQ) and MCARQ are obtained respectively. Theoretical analysis and simulation results demonstrate that the MCARQ protocol has a better performance than the MARQ in delay and energy efficiency. The presented model has potentially applications in practical systems, e.g. Multi-user MIMO communications.