Optimal Data Rate for Reliable Packet Communications in Laplace Noise

Vehicular, military and industrial field wireless deployments take place in harsh environments affected by impulsive noise. This letter proposes the use of a selective automatic repeat request (SR-ARQ) scheme where the data transmission rate is optimized in order to minimize the mean delay. The optimization procedure is proposed in relation to the use of a soft-limiting detector that eliminates out-of-amplitude noise at the receiving end. The superiority of the optimized SR-ARQ scheme over different alternatives is clearly shown in the letter.