Skip to Main content Skip to Navigation
New interface
Conference papers

Overview of IEEE802.15.4g OFDM and its Applicability to Smart Building Applications

Abstract : This paper compares the performance of two IEEE802.15.4 physical layers in the Smart Building context: 2.4 GHz O-QPSK and sub-GHz OFDM. The former has been in the IEEE802.15.4 standard since 2003, the latter was rolled into its 2015 revision. OFDM promises exceptional performance, in particular in environments with high external interference and multi-path fading. This paper starts with a comprehensive overview of IEEE802.15.4 and IEEE802.15.4g, with a particular focus on OFDM, its design drivers and modes of operation. The second half of this paper presents results from an exhaustive benchmarking campaign of both technologies in a building environment, and discusses lessons learnt. We show how OFDM has a higher range, even at 400 kbps and 800 kbps data rates. We then quantify the importance of frequency repetition in OFDM, and of using a wide communication channel, and we show how the use of OFDM can result in a 2–4 χ decrease in power consumption compared to 2.4 GHz O-QPSK. We conclude by recommending the use of OFDM option 1, with MCS2 for short (<128 B) frames, and MCS3 otherwise.
Complete list of metadata

Cited literature [19 references]  Display  Hide  Download
Contributor : Thomas Watteyne Connect in order to contact the contributor
Submitted on : Thursday, January 3, 2019 - 12:30:32 AM
Last modification on : Tuesday, October 25, 2022 - 4:25:05 PM
Long-term archiving on: : Thursday, April 4, 2019 - 1:45:34 PM


Files produced by the author(s)




Jonathan Munoz, Emmanuel Riou, Xavier Vilajosana, Paul Mühlethaler, Thomas Watteyne. Overview of IEEE802.15.4g OFDM and its Applicability to Smart Building Applications. Wireless Days Conference (WD), Apr 2018, Dubai, United Arab Emirates. ⟨10.1109/WD.2018.8361707⟩. ⟨hal-01718175⟩



Record views


Files downloads