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Throughput-efficient Relay assisted Hybrid ARQ

Abstract : Reliable data transmission within wireless communication systems can be obtained via various means, including (i) Hybrid Automatic Repeat reQuest (HARQ) mechanisms which allow retransmission of incorrectly decoded packets; (ii) Additional nodes, called relays, which may also help the transmission by retransmitting these packets. An efficient combination of both techniques is therefore of great interest. This paper investigates a relay assisted HARQ protocol aiming at maximizing the system throughput. The protocol allows the source to transmit a new message during the same time-slot in which the relay is retransmitting a previous message. By using an efficient interference canceler at the destination, the numerical results show significant throughput gain compared to standard approaches.
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Submitted on : Monday, April 27, 2020 - 7:09:34 PM
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Alaa Khreis, Philippe Ciblat, Francesca Bassi, Pierre Duhamel. Throughput-efficient Relay assisted Hybrid ARQ. International Symposium on Wireless Communication Systems, IEEE, Aug 2018, Lisbon, Portugal. ⟨10.1109/iswcs.2018.8491051⟩. ⟨hal-01812452⟩

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