Acoustic Communication in Wireless Sensor Networks

Acoustic communication has been widely used in undersea wireless networks. In this paper, we explore the use of acoustic communication in terrestrial wireless sensor networks. This work does not aim to replace the radio communication which is widely used in wireless sensor networks. Rather, we aim to provide an alternative way of communication among the motes in case that the radio transceiver fails to work. Also, acoustic communication can be used as an out-band communication channel in wireless sensor networks. For example, it can be used as busy tone which is used in some MAC protocols.

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