Resource allocation for Type-I HARQ-based wireless networks with finite-length codes

Optimal bandwidth and power allocation is performed in a wireless clustered ad hoc network (CAHN) when Type-I Hybrid Automatic Repeat reQuest (HARQ) is used at the link layer along with an Orthogonal Frequency Division Multiple Access (OFDMA) scheme under individual data rate constraint. The considered network topology imposes the resource allocation manager to know only the channel state information (CSI) statistics. Gaussian codes with a finite block length are assumed in order to give the best achievable performance, with finite latency, that one could expect from this HARQ-based CAHN. The framework developed in this paper is well adapted to predict the performance of strong channel coding over the Rayleigh channel. Typically it gives useful insights on the behavior of the proposed HARQ-based CAHN when LDPC codes are implemented.