On the throughput of hybrid-ARQ under statistical queuing constraints

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

Hybrid automatic repeat request (HARQ) is a high-performance communication protocol, leading to the effective use of the wireless channel and the resources with only limited feedback about the channel state information (CSI) to the transmitter. In this paper, the throughput of HARQ with incremental redundancy (IR) and fixed transmission rate is studied in the presence of statistical queuing constraints imposed as limitations on buffer overflow probabilities. In particular, tools from the theory of renewal processes and stochastic network calculus are employed to characterize the maximum arrival rates that can be supported by the wireless channel when HARQ-IR is adopted. Effective capacity is employed as the throughput metric, and a closed-form expression for the effective capacity of HARQ-IR is determined for small values of the quality-of-service (QoS) exponent. The impact of the fixed transmission rate, queuing constraints, and hard-deadline limitations on the throughput is investigated, and comparisons with type-I HARQ and HARQ with Chase Combining are provided.

Original languageEnglish (US)
Article number6862887
Pages (from-to)2725-2732
Number of pages8
JournalIEEE Transactions on Vehicular Technology
Volume64
Issue number6
DOIs
StatePublished - Jun 1 2015

Keywords

  • Cumulant-generating function
  • deadline constraints
  • effective capacity
  • fading channel
  • hybrid automatic repeat request (ARQ) (HARQ) with incremental redundancy (IR) (HARQ-IR)
  • queuing constraints
  • renewal processes

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics

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