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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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https://hal-centralesupelec.archives-ouvertes.fr/hal-01825017
Contributor : Pierre Duhamel <>
Submitted on : Monday, April 27, 2020 - 7:02:51 PM
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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. ⟨10.1109/PIMRC.2018.8580804⟩. ⟨hal-01825017⟩

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