Multi-Packet HARQ with Delayed Feedback

Abstract : In current wireless communication systems, the feedback required by the Hybrid Automatic ReQuest (HARQ) mechanism is received with some delay at the transmitter side. To alleviate this issue, parallel Stop-and-Wait HARQ is usually employed. In this paper, we propose a multi-packet HARQ protocol (also called superposition coding or multi-layer HARQ) to improve the user's delay distribution and increase the throughput, without any additional feedback such as Channel State Information. The performance analysis, provided from an information-theoretic point-of-view, shows that the proposed protocol offers better delay distribution, higher throughput and lower message error rate compared to the conventional parallel Stop-and-Wait HARQ, at the expense of increased decoding complexity.
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Contributor : Pierre Duhamel <>
Submitted on : Wednesday, June 27, 2018 - 10:51:21 PM
Last modification on : Thursday, October 17, 2019 - 12:34:36 PM


  • HAL Id : hal-01825017, version 1


Alaa Khreis, Philippe Ciblat, Francesca Bassi, Pierre Duhamel. Multi-Packet HARQ with Delayed Feedback. International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Sep 2018, Bologne, Italy. ⟨hal-01825017⟩



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