Reliability-based type II hybrid ARQ schemes

V. Tripathi*, E. Visotsky, R. Peterson, Michael Honig

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

28 Scopus citations


Hybrid ARQ (HARQ) schemes use a combination of forward error correction and retransmissions to guarantee reliable packet data communications. In this work, we propose a HARQ scheme that exploits channel state information and received packet quality to improve system performance. Specifically, the receiver uses the average magnitude of the log-likelihood ratios corresponding to the received information bits, in order to determine the sizes of subsequent retransmissions. The proposed retransmission strategy attempts to maximize user throughput while satisfying a maximum packet delay constraint. The performance of our reliability-based type II HARQ (RBHARQ) scheme is evaluated in static and time-varying channels through simulations.

Original languageEnglish (US)
Pages (from-to)2899-2903
Number of pages5
JournalIEEE International Conference on Communications
StatePublished - Jul 18 2003
Event2003 International Conference on Communications (ICC 2003) - Anchorage, AK, United States
Duration: May 11 2003May 15 2003

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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