Analysis and simulation of volume conduction channel for implantable devices
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Abstract:
According to closedloop communication system design of implantable devices and the communication problems, a data communication model based on volume conduction is proposed; volume conduction channel’s basic characteristic is analyzed, namely, when working frequency of volume conduction channel runs in kHz grade, biological background signal interference is insignificant. volume conduction channel can be approximated as additive white gaussian noise channel (AWGN); derived under twodimensional modulation channel capacity formula. Thus, twolevel modulation of channel capacity could be effective at very low signal to noise ratio (SNR), while multilevel modulation should be used at high SNR. Finally, using SystemView of channel simulation, the results show that the twolevel modulation is better than multilevel modulation and verify the effectiveness of the proposed method.
