Design And Implementation of An Ultra-Low Power Bose Chaudhuri Hocquenghem Encoding Based Body Channel Communication For Medical Applications

This paper proposes the Bose–Chaudhuri–Hocquenghem (BCH) encoding based Body Channel Communication (BCC) for medical applications by ultra-low power consumption. The transmitter uses channel of 1-100 MHz frequency to enhance the transmitter frequency and time domain properties. The BCH based BCC transmitter uses two stage low power analog processing circuit and digital information restoration circuit. The analog processing circuit consists of capacitor coupled adjustable preamplifier. In addition to that a body channel communication (BCC) transceiver with BCH codes modulation is proposed. In the BCC transceiver side, sensed data are encoded into BCH code format, and then the chosen BCH codes restrict the maximum consecutive identical digit (CID) to rise the data transmission rate. In the BCC receiver side, we use an analog front-end (AFE) circuit board to amplify the attenuated signal from the transmitter and restore the signal to the digital waveform. After the 8x oversampling sampler and vote integrator recovery the clock and data, the BCH code demodulator demodulates the original data. The proposed BCC transceiver has higher data reliability because of the orthogonal characteristic of BCH codes. Moreover, the proposed BCH code concatenated method strengthens the jitter tolerance and improve the code rate. The proposed BCC transceiver was verified on a field-programmable gate array (FPGA) board. The Proposed Data transceiver achieves data rate of 100 Mbps, Also, the BER value is < 10− 6 and < 10− 5 at 60 Mbps and 100 Mbps, respectively.