A Body Channel Communication Transceiver System Utilizing Manchester Code for WBAN with Multi-sensor Nodes

This paper proposes a multi-sensor nodes communication system using the human body channel as the transmission medium. First, the transceiver is highly integrated with adjustable input and output impedance and adjustable gain. Second, in order to make better use of the characteristics of the human body channel, Manchester code is used for signal transmission between sensor nodes. In third, multi-sensor node communication is realized by adopting a master-multi-slave structure and time-division multiplexing. The master sends instructions to the slave nodes by broadcasting, sets the system in different modes, and receives the data from slave sensors. The transceiver is implemented with a 65nm CMOS process and Manchester codecs are implemented in Field-Programmable Gate Arrays (FPGA). As a result, the proposed transceiver can achieve the highest data rates of 60 Mbps and the measured RX sensitivity is −64dBm. And the multi-sensor nodes communication system realizes the data interaction between one hub and eight slave sensors.