DEVICE AND METHOD FOR TRANSMISSION OF DATA IN A LOW-FREQUENCY BAND IN THE COMMUNICATION SYSTEM USING A HUMAN BODY AND THE COMMUNICATION SYSTEM USING A HUMAN BODY

摘要

1. A device for transmitting data in a low frequency band in a communication system using a human body, the device comprising: a preamble generator for generating a preamble signal; a header generator for generating packet header information; a data generator for generating data; a serial-parallel converter for converting data, transmitted from the data generator into symbols by means of series-parallel conversion; an orthogonal modulator for displaying symbols transmitted from the sequence but-parallel converter, in one of the sequences that are orthogonal to each other, separated in a multiplexer for timing signals emanating from the preamble generator, the header generator and the orthogonal modulator; frequency shifter to shift the output of the multiplexer to a specific frequency. 2. The apparatus of claim 1, further comprising: an initial frame delimiter (SFD) generator for generating an SFD indicating a starting point of header information in a transmitted packet including preambles, SFD, header and data; a pilot signal generator for generating a pilot signal, which allows the synchronization process to be performed when receiving data. 3. The apparatus of claim 1, wherein the frequency shifter shifts the output of the multiplexer to a specific frequency by using a frequency shift sequence. The device according to claim 3, wherein the frequency shift sequence used by the frequency shifter is a sequence including alternating between 0 and 1.5. The device according to claim 1, in which the passband