DATA COMMUNICATION SYSTEM, DATA TRANSMITTER, DATA RECEIVER AND DATA COMMUNICATION METHOD

摘要

PROBLEM TO BE SOLVED: To increase a data communication rate in a data communication system configuring a closed circuit by capacitive coupling between the human body and an ambient environment such as a ground surface.

SOLUTION: A data transmitter 3 has an OFDM modulator 32 modulating transmit data by using an OFDM system and a frequency converter 33 converting a modulation signal into a frequency band making the transmission loss of a signal transmission line formed of the capacitive coupling with the human body smaller than that of a space from a baseband. A data receiver 4 has the frequency converter 42 receiving a signal transmitted from the data transmitter 3 from the human body and returning the frequency band of an input signal to the baseband and an OFDM demodulator 43 demodulating a baseband signal.

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