Min-Joon Kim, Sung-Hun Chae, Young-Bo Shim, Dong-Hyun Lee, Myung-Jin Kim, Yeon-Kug Moon, Kon-Woo Kwon, Vol. 13, No. 8, August 30, 2019
10.3837/tiis.2019.08.023

• underground communication
• wireless underground sensor networks (WUSN)
• magnetic induction (MI)
• distance measurement

Hong Zhang, SungHyun Hong, KyungHi Chang, Vol. 4, No. 3, June 29, 2010
10.3837/tiis.2010.06.004

• LR-UWB
• CSS
• Active RFID
• Multi-hop Relay
• USN