An energy-efficient pulse position modulation transmitter for galvanic intrabody communications

Intrabody communications (IBC) is a novel communication technique which uses the human body itself as the signal propagation medium. This communication method is categorized as a physical layer of IEEE 802.15.6 or Wireless Body Area Network (WBAN) standard. It is significant to investigate the IBC systems to improve the transceiver design characteristics such as data rate and power consumption. In this paper, we propose a new IBC transmitter implementing pulse position modulation (PPM) scheme based on impulse radio. A FPGA is employed to implement the architecture of a carrier-free PPM transmission. Results demonstrate the data rate of 1.56 Mb/s which is suitable for the galvanic coupling IBC method. The PPM transmitter power consumption is 2.0 mW with 3.3 V supply voltage. Having energy efficiency as low as 1.28 nJ/bit provides an enhanced solution for portable biomedical applications based on body area networks.

[1]  Yo-Sheng Lin,et al.  A 0.5-V Biomedical System-on-a-Chip for Intrabody Communication System , 2011, IEEE Transactions on Industrial Electronics.

[2]  Wolfgang Fichtner,et al.  Signal Transmission by Galvanic Coupling Through the Human Body , 2010, IEEE Transactions on Instrumentation and Measurement.

[3]  Ilangko Balasingham,et al.  Communication using ultra wide-band pulse position modulation for in-body sensors , 2012, BODYNETS.

[4]  Igor Krois,et al.  A MULTICHANNEL WIRELESS EMG MEASUREMENT SYSTEM BASED ON INTRABODY COMMUNICATION , 2009 .

[5]  J. M. Smith.  The doctor will see you ALWAYS , 2011, IEEE Spectrum.

[6]  Hoi-Jun Yoo,et al.  A Low-Energy Crystal-Less Double-FSK Sensor Node Transceiver for Wireless Body-Area Network , 2012, IEEE Journal of Solid-State Circuits.

[7]  Wolfgang Fichtner,et al.  Wireless Implant Communications for Biomedical Monitoring Sensor Network , 2007, 2007 IEEE International Symposium on Circuits and Systems.

[8]  Thoams Guthrie Zimmerman.  Personal area networks (PAN) : near-field intra-body communication , 1995 .

[9]  Duck Gun Park,et al.  A novel system for intrabody communication: touch-and-play , 2006, 2006 IEEE International Symposium on Circuits and Systems.

[10]  Lijia Ge,et al.  On the BER performance of pulse-position-modulation UWB radio in multipath channels , 2002, 2002 IEEE Conference on Ultra Wideband Systems and Technologies (IEEE Cat. No.02EX580).

[11]  Michael Faulkner,et al.  A Survey on Intrabody Communications for Body Area Network Applications , 2013, IEEE Transactions on Biomedical Engineering.

[12]  Muhammad Irfan Kazim,et al.  An analog receiver front-end for capacitive body-coupled communication , 2012, NORCHIP 2012.

[13]  A. Ahlbom.  Guidelines for limiting exposure to time-varying electric, magnetic, and electromagnetic fields (up to 300 GHz) , 1998 .

[14]  Matti Hämäläinen.  Singleband UWB systems : analysis and measurements of coexistence with selected existing radio systems , 2006 .