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- W3075112942 abstract "Considering the coverage and short-packet communication requirements, this paper proposes a hybrid automatic repeat request (HARQ) assisted short-packet communications for cooperative Internet of Things (IoT) networks, where the signals are transmitted through short-packets. Since the short-packet communications will bring a higher packet error rate than long-packet communications, HARQ is adopted to improve transmission reliability by allowing retransmit the signals which cannot be detected correctly. For lighting the burden of the transmitter, the retransmitted signals are only sent from the relay. According to the detection capability of the user, selection combining (SC) scheme and maximum ratio combining (MRC) scheme are designed to detect the multiple transmitted signals. Besides, a set of closed-form expressions of the average packet error rate (APER) and effective throughput (ET) are derived over Nakagami-$m$ channels in the proposed SC and MRC schemes. For providing more insights into system performance, the asymptotic results are also provided. Simulation results demonstrate that HARQ will significantly improve reliability and transmission efficiency. Also, the MRC scheme outperforms the SC scheme in terms of APER and ET metrics, however, when the transmit power at the relay is high enough or the packet length is big enough, they achieve nearly the same performance." @default.
- W3075112942 created "2020-08-24" @default.
- W3075112942 creator A5020906283 @default.
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- W3075112942 date "2020-01-01" @default.
- W3075112942 modified "2023-09-26" @default.
- W3075112942 title "HARQ Assisted Short-Packet Communications for Cooperative Networks Over Nakagami-m Fading Channels" @default.
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- W3075112942 doi "https://doi.org/10.1109/access.2020.3017148" @default.
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