Throughput analysis of SR-ARQ scheme with adaptive packet length in slowly varying Rayleigh fading channel

In this paper, throughput efficiency of a selective repeat automatic repeat request (SR-ARQ) scheme with controllable packet length in Rayleigh fading channel is analyzed. The slowly Rayleigh fading channel is modeled to two Markov states with known transitional probabilities. Our system has four modes with known transition probabilities with which steady-state probabilities of each system mode can be calculated. With clear form of throughput efficiency, system performance can be directly evaluated so that time consuming simulation can be avoided. Throughput efficiencies in four simulation environments from former article are calculated to get numerical results which are considerably close to the former simulation results