The present invention relates to a human implantable wireless communication system, and to generate and transmit a first RF signal by encoding data to be transmitted with a space time code, and to transmit a second RF signal of an external device of a human body and a third RF signal of an external RF module. An implantable medical device which receives and decodes the data using an Alamouti technique to extract data and measures a biosignal； The data to be transmitted is generated and transmitted as a second RF signal by encoding the space time code, and the first RF signal of the implantable medical device and the third RF signal of the external RF module are respectively received and decoded by the Alamouti technique. Extracting the first and second RF signals； and a receiver for receiving the first RF signal or the second RF signal, and amplifying the received first RF signal or the second RF signal. A first amplifier, an FM detector for detecting a data signal in the amplified first or second RF signal, an encoder for encoding the data signal by a set space time code technique, and an encoded data signal as a third RF signal A human body external RF module having a transmission modulator for modulating, a second amplifier for amplifying the power of the third RF signal, and a transmitter for transmitting the amplified third RF signal. It characterized in that it comprises a. According to the present invention as described above, in the human implantable wireless communication system further comprises an external RF module of the human body attached to the space time code technique and the delay of the symbol, by using the two antennas during transmission to obtain the effect It is possible to reduce the power loss due to transmission error when receiving. In addition, the external RF module amplifies and transmits the power of the transmission signal, thereby enabling communication with an external external human body device. Accordingly, by overcoming the disa
