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Sensors 2018, 18(1), 204; https://doi.org/10.3390/s18010204

Performance Analysis of Millimeter-Wave Multi-hop Machine-to-Machine Networks Based on Hop Distance Statistics

1
Department of Information and Telecommunication Engineering, Incheon National University, Incheon 22012, Korea
2
Department of Electrical, Electronic and Control Engineering, Hankyong National University, Anseong 17579, Korea
*
Author to whom correspondence should be addressed.
Received: 1 December 2017 / Revised: 28 December 2017 / Accepted: 11 January 2018 / Published: 12 January 2018
(This article belongs to the Special Issue Green Wireless Networks in 5G-inspired Applications)
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Abstract

As an intrinsic part of the Internet of Things (IoT) ecosystem, machine-to-machine (M2M) communications are expected to provide ubiquitous connectivity between machines. Millimeter-wave (mmWave) communication is another promising technology for the future communication systems to alleviate the pressure of scarce spectrum resources. For this reason, in this paper, we consider multi-hop M2M communications, where a machine-type communication (MTC) device with the limited transmit power relays to help other devices using mmWave. To be specific, we focus on hop distance statistics and their impacts on system performances in multi-hop wireless networks (MWNs) with directional antenna arrays in mmWave for M2M communications. Different from microwave systems, in mmWave communications, wireless channel suffers from blockage by obstacles that heavily attenuate line-of-sight signals, which may result in limited per-hop progress in MWNs. We consider two routing strategies aiming at different types of applications and derive the probability distributions of their hop distances. Moreover, we provide their baseline statistics assuming the blockage-free scenario to quantify the impact of blockages. Based on the hop distance analysis, we propose a method to estimate the end-to-end performances (e.g., outage probability, hop count, and transmit energy) of the mmWave MWNs, which provides important insights into mmWave MWN design without time-consuming and repetitive end-to-end simulation. View Full-Text
Keywords: Internet-of-Things (IoT); machine-to-machine (M2M) communications; multi-hop networks; hop distance Internet-of-Things (IoT); machine-to-machine (M2M) communications; multi-hop networks; hop distance
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Jung, H.; Lee, I.-H. Performance Analysis of Millimeter-Wave Multi-hop Machine-to-Machine Networks Based on Hop Distance Statistics. Sensors 2018, 18, 204.

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