Throughput of HARQ-IR with finite blocklength codes and QoS constraints

In this paper, throughput of hybrid automatic repeat request (HARQ) schemes with finite blocklength codes is studied for both constant-rate and ON-OFF discrete-time Markov arrivals under statistical queuing constraints and deadline limits. After analyzing the decoding error probability and outage probability, the distribution of transmission period is characterized, and the throughput expressions are obtained for both arrival models. Analytical results are verified via Monte Carlo simulations. In the numerical results, the impact of deadline constraints, fixed transmission rate, coding blocklength, and queuing constraints on the throughput is analyzed.

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