C. Kaldy, A. A. Lazar, E. K. Simonyi, and L. T. Toth
Time Encoded Communications for Human Area Network Biomonitoring
BNET Technical Report #2-0 , June 2007
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Power constraints play a key role in designing Human Area Networks (HANs) for biomonitoring. To alleviate the power constraints, we advocate a design that uses an asynchronous time encoding mechanisms for representing biomonitoring information and the skin surface as the communication channel. Time encoding does not require a clock while allows perfect signal recovery; the communication channel is operated below 1 MHz. We (i) review the fundamental theory behind time encoding and signal recovery, (ii) describe the implementation of a HAN prototype and (iii) present research data obtained from our experimental platform. We demonstrate that the fidelity of the proposed signal representation and transmission scheme is well above the biomedical monitoring requirements even in the case of additive channel-noise and neighboring channel interference. Consequently, the traditional HAN architecture consisting of clocked A/D converters feeding into digital RF channels can be replaced with a less power demanding time encoding/decoding pair that uses the skin surface as a communications channel


  author = "C. Kaldy and A. A. Lazar and E. K. Simonyi and L. T. Toth",
  title = "Time Encoded Communications for Human Area Network Biomonitoring",
  year = 2007,
  booktitle = "BNET Technical Report #2-0",
  month = "Jun"