Based on the principle of Visible Light Communication（VLC）technology

we design a portable antenna light equipment

which has the advantages of large bandwidth

high security

no electromagnetic radiation pollution

etc.The device uplink and downlink use a 1 W white Light-Emitting Diode（LED）as an emission source

which can meet the needs of lighting and communications.We also designed transmitter circuits and high-sensitivity receiver circuits

and data transmission

which is based on the Manchester encoding and decoding process and dramatically improves the sensitivity of the reception end.Using Universal Asynchronous Receiver/Transmitter（UART）send and receive data

we demonstrate a transfer rate of 115.2kbit/s and 3mfull-duplex data transmission experiment

which satisfy the requirement of the electromagnetic radiation sensitive occasions for short-range demand low speed communication.