Lamola, Mokwape M and Johnson, David L and Lysko, Albert A and Maliwatu, Richard and Densmore, Melissa (2020) Performance Analysis of Dual 5 GHz WiFi and UHF TV White Space Network Links, Proceedings of 2019 IEEE 2nd Wireless Africa Conference (WAC), 18-20 Aug 2019, Pretoria, South Africa, IEEE.
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Abstract
Commonly used WiFi is known to be ill-suited for penetrating vegetation and buildings and non-line-of-sight conditions. Television white space (TVWS) operates in ultra-high frequency (UHF) bands that overcome many of the penetration and line-of-sight challenges found in the 2.4 GHz and 5 GHz bands normally used by WiFi. The aim of this study is to report on the performance of WiFi technology in the 5 GHz band and the TVWS technology in the 600 MHz UHF TV band as well as a combination of both radios in two different scenarios, short-range clear line-of-sight, and non-line-of-sight conditions. A number of performance metrics, such as estimated throughput, bitrate, signal strength, noise, transmit power, transmit error, packet loss, and round trip time, are compared for varied distances and increasing levels of vegetation in the propagation path. Both TVWS and WiFi experiments showed increased sensitivity to noise as channel widths increased with TVWS being particularly susceptible to noise in nearby channels from powerful TV transmitters. Aggregating the WiFi and TVWS radios proved to have the best performance improvements when the WiFi and TVWS links had similar throughput in line-of-sight conditions.
| Item Type: | Conference paper |
|---|---|
| Uncontrolled Keywords: | digital television;microwave propagation;radio spectrum management;television broadcasting;television transmitters;UHF radio propagation;wireless LAN;ultra-high frequency;line-of-sight challenges;TVWS technology;nonline-of-sight conditions;TVWS radios;line-of-sight conditions;performance analysis;UHF TV white space network links;buildings;dual WiFi analysis;vegetation;UHF TV band;propagation path;channel widths;TV transmitters;frequency 5.0 GHz;frequency 2.4 GHz;frequency 600.0 MHz;Wireless fidelity;Throughput;TV;Meters;IEEE 802.11 Standard;Sports;UHF measurements;5 GHz WiFi;television white space;TVWS;performance;link aggregation |
| Subjects: | Networks Networks > Network types > Wireless access networks Networks > Network performance evaluation > Network performance analysis |
| Alternate Locations: | https://ieeexplore.ieee.org/document/8843406 |
| Date Deposited: | 01 Sep 2021 09:53 |
| Last Modified: | 01 Sep 2021 09:53 |
| URI: | http://pubs.cs.uct.ac.za/id/eprint/1413 |
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