A Probabilistic Retransmission Protocol on a Relaying Network

Abstract : Relaying protocols are usually deterministic, i.e. they commute from one action to the next one in a predefined manner, depending on the success of the transmission. This paper demonstrates the advantages that probabilistic protocols (i.e. the next action to be undertaken depends on some probability) may have in this context. The whole study is performed on a simple source-relay-destination network, the relay working in demodulate and forward mode, in order to obtain insights on the interaction between relaying and HARQ. So far, probabilistic protocols have been mainly proposed for higher layers of communication systems, but are applied here to physical and MAC layers. Since it contains only two parameters, we demonstrate that our probabilistic protocol can easily be tuned for best performance using a Finite State Markov Chain (FSMC), and that it brings improvement over deterministic protocols in the same scenario.
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Faton Maliqi, Francesca Bassi, Pierre Duhamel, Ilir Limani. A Probabilistic Retransmission Protocol on a Relaying Network. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Oct 2017, Montreal, Canada. ⟨hal-01699365⟩

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