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The Magnetic Induction (MI)-based communication techniques enable the applications of wireless sensor networks (WSNs) in complex environments, such as underground and underwater environments. However, the complex environments usually consist of many conductive objects that can significantly enhance or block the MI signals. Efficient communications can be achieved if we can smartly utilize the positive...
The radio frequency (RF) spectrum becomes overly crowded in some indoor environments due to the high density of users and bandwidth demands. To accommodate the tremendous wireless data demands, efficient spectrum-sharing approaches are highly desired. To this end, this paper introduces a new spectrum sharing solution for indoor environments based on the usage of a reconfigurable reflect-array in the...
Wireless underground sensor networks (WUSNs) can enable many important applications such as intelligent agriculture, pipeline fault diagnosis, mine disaster rescue, concealed border patrol, and crude oil exploration. The key challenge to realize WUSNs is the wireless communication in underground environments. Most existing wireless communication systems utilize a dipole antenna to transmit and receive...
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