An interesting research paper, thanks for posting it.
I've recently been fairly interested in smart homes, which (alongside WiFi) often use ZigBee and/or Z-Wave protocols.
Whilst Z-Wave isn't covered in this paper, ZigBee (which runs at 2.4 Ghz - but on higher channels than WiFi to prevent overlap) is covered. If I'm reading correctly, the paper seems to say that many anti-jamming techniques are successful with ZigBee, unlike previous research that concludes that it's usually harder to block ZigBee jamming attacks (ref 21)?