Variable-rate Retransmissions for Incremental Redundancy Hybrid ARQ

Leszek Szczecinski; Ciro Correa; Luciano Ahumada

Variable-rate Retransmissions for Incremental Redundancy Hybrid ARQ

Information Theory 2012-07-03 v1 math.IT

Authors: Leszek Szczecinski , Ciro Correa , Luciano Ahumada

Abstract

The throughput achievable in truncated Hybrid ARQ protocol (HARQ) using incremental redundancy (IR) in analyzed when transmitting over a block-fading channel whose state is unknown at the transmitter. We allow the transmission lengths to vary, optimize them efficiently via dynamic programming, and show that such a variable-rate HARQ-IR provides gains with respect to a fixed-rate transmission in terms of increased throughput and decreased average number of transmissions, reducing at the same time the outage probability.

Keywords

wireless communication network protocol

Cite

@article{arxiv.1207.0229,
  title  = {Variable-rate Retransmissions for Incremental Redundancy Hybrid ARQ},
  author = {Leszek Szczecinski and Ciro Correa and Luciano Ahumada},
  journal= {arXiv preprint arXiv:1207.0229},
  year   = {2012}
}

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