Throughput Improvement by Mode Selection in Hybrid Duplex Wireless Networks

Article

Mousavinasab, B., Gazestani, A. H., Ghorashi, S. A. and Shikh-Bahaei, M. 2020. Throughput Improvement by Mode Selection in Hybrid Duplex Wireless Networks. Wireless Networks. 26, p. 3687–3699. https://doi.org/10.1007/s11276-020-02286-3
AuthorsMousavinasab, B., Gazestani, A. H., Ghorashi, S. A. and Shikh-Bahaei, M.
Abstract

Hybrid duplex wireless networks, use half duplex (HD) as well as full duplex (FD) modes to utilize the advantages of both technologies. This paper tries to determine the proportion of the network nodes that should be in HD or FD modes in such networks, to maximize the overall throughput of all FD and HD nodes. Here, by assuming imperfect self-interference cancellation (SIC) and using ALOHA protocol, the local optimum densities of FD, HD and idle nodes are obtained in a given time slot, using Karush–Kuhn–Tucker (KKT) conditions as well as stochastic geometry tool. We also obtain the sub-optimal value of the signal-to-interference ratio (SIR) threshold constrained by fixed node densities, using the steepest descent method in order to maximize the network throughput. The results show that in such networks, the proposed hybrid duplex mode selection scheme improves the level of throughput. The results also indicate the effect of imperfect SIC on reducing the throughput. Moreover, it is demonstrated that by choosing an optimal SIR threshold for mode selection process, the achievable throughput in such networks can increase by around 5%.

Keywordsfull duplex; hybrid duplex; mode selection; imperfect SIC; stochastic geometry; throughput
JournalWireless Networks
Journal citation26, p. 3687–3699
ISSN1572-8196
Year2020
PublisherSpringer
Accepted author manuscript
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File Access Level
Anyone
Accepted author manuscript
File Access Level
Anyone
Digital Object Identifier (DOI)https://doi.org/10.1007/s11276-020-02286-3
Web address (URL)https://doi.org/10.1007/s11276-020-02286-3
Publication dates
Online09 Mar 2020
Publication process dates
Accepted22 Feb 2020
Deposited29 May 2020
Copyright holder© 2020 Springer Nature
Copyright informationThis is a post-peer-review, pre-copyedit version of an article published in Wireless Networks. The final authenticated version is available online at: https://doi.org/10.1007/s11276-020-02286-3.
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