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Interference of Simulated IEEE 802.11 Links with Directional Antennas

  • WiFi-based Long Distance (WiLD) networks have emerged as a promising alternative approach for Internet in rural areas. The main hardware components of these networks are commercial off-the-shelf WiFi radios and directional antennas. During our experiences with real-world WiLD networks, we encountered that interference among long-distance links is a major issue even with high gain directional antennas. In this work, we are providing an in-depth analysis of these interference effects by conducting simulations in ns-3. To closely match the real-world interference effects, we implemented a module to load radiation pattern of commonly used antennas. We analyze two different interference scenarios typically present as a part of larger networks. The results show that side-lobes of directional antennas significantly influence the throughput of long-distance WiFi links depending on the orientation. This work emphasizes that the usage of simple directional antenna models needs to be considered carefully.

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Document Type:Conference Object
Author:Michael Rademacher, Karl Jonas
Parent Title (English):Ricardo, Campos et al. (Eds): 2017 Wireless Days (WD17). 29-31 March 2017, Porto, Portugal
First Page:27
Last Page:32
Publishing Institution:Hochschule Bonn-Rhein-Sieg
Date of first publication:2017/05/04
Tag:WiFi-based Long Distance (WiLD); directional antennas; interference
Departments, institutes and facilities:Fachbereich Informatik
Dewey Decimal Classification (DDC):0 Informatik, Informationswissenschaft, allgemeine Werke / 00 Informatik, Wissen, Systeme / 004 Datenverarbeitung; Informatik
Entry in this database:2017/05/09
Licence (Multiple languages):License LogoIn Copyright (Urheberrechtsschutz)