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On the Benefits of Network-Level Cooperation in Millimeter-Wave Communications
Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, Faculty of Science & Engineering. Nokia, Germany.
Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0003-4416-7702
Nokia, Germany.
Nokia, Germany.
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2019 (English)In: IEEE Transactions on Wireless Communications, ISSN 1536-1276, E-ISSN 1558-2248, Vol. 18, no 9, p. 4408-4424Article in journal (Refereed) Published
Abstract [en]

Relaying techniques for millimeter-wave wireless networks represent a powerful solution for improving the transmission performance. In this paper, we quantify the benefits in terms of delay and throughput for a random-access multi-user millimeter-wave wireless network, assisted by a full-duplex network cooperative relay. The relay is equipped with a queue for which we analyze the performance characteristics (e.g., arrival rate, service rate, average size, and stability condition). Moreover, we study two possible transmission schemes: fully directional and broadcast. In the former, the source nodes transmit a packet either to the relay or to the destination by using narrow beams, whereas, in the latter, the nodes transmit both the destination and the relay in the same timeslot by using a wider beam but with lower beamforming gain. In our analysis, we also consider the beam alignment phase that occurs every time, a transmitter node changes the destination node. We show the duration of how the beam is aligned, as well as position and a number of transmitting nodes, significantly affect the network performance. In addition, we discuss the impact of beam alignment errors and imperfect self-interference cancellation technique at the relay for full-duplex communications. Moreover, we illustrate the optimal transmission scheme (i.e., broadcast or fully directional) for several system parameters and show that a fully directional transmission is not always beneficial, but in some scenarios, broadcasting and relaying can improve the performance in terms of throughput and delay.

Place, publisher, year, edition, pages
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC , 2019. Vol. 18, no 9, p. 4408-4424
Keywords [en]
Millimeter-waves; network cooperative relaying; beam alignment; random access networks; directional communications
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:liu:diva-161190DOI: 10.1109/TWC.2019.2924432ISI: 000485766100016OAI: oai:DiVA.org:liu-161190DiVA, id: diva2:1365692
Note

Funding Agencies|European Unions Horizon 2020 Research and Innovation Programme through the Marie Sklodowska-Curie Grant [643002]

Available from: 2019-10-25 Created: 2019-10-25 Last updated: 2019-10-25

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