A communication system using magnetic fields

A new wireless communication system using a low frequency signal transmitted by current loop antennas is proposed. The communication range is relatively small (about several meters) so that the range is included in near field of a carrier signal. The use of magnetic fields makes it possible to provide high quality communication in an unfavorable environment where metal or fluids are present. In addition, algorithms for transceivers of this system are proposed to carefully deal with energy consumption and interference which changes dramatically according to the system's application.