Energy Efficient Cooperative Communication for UWB Based In-Body Area Networks

In this paper, we study the energy efficiency of single relay cooperative transmission for ultra-wideband (UWB) based in-body area networks (IBANs). A simple relay-based cooperative IBAN system model is introduced first. With a target threshold of the received signal-to-noise ratio (SNR), outage probabilities for direct and cooperative transmissions are derived respectively. Afterwards, the average energy consumption per bit is given for both transmission schemes. The optimal relay location for cooperation is also derived and analyzed to minimize the average bit energy consumption. Simulation verifies the analysis and shows that cooperative transmission can achieve a satisfactory improvement on energy efficiency compared with direct transmission over a range of relay locations for UWB based IBANs. The improvement is more significant with a higher SNR threshold or with the implanted sensor having a deeper depth inside the body.

[1]  Ilangko Balasingham,et al.  Ultra-wideband statistical propagation channel model for implant sensors in the human chest , 2011 .

[2]  Rong Yu,et al.  Mobile device aided cooperative transmission for body area networks , 2010, BODYNETS.

[3]  Xuemin Shen,et al.  On energy efficiency of cooperative communications in wireless body area network , 2011, 2011 IEEE Wireless Communications and Networking Conference.

[4]  Victor C. M. Leung,et al.  Enabling technologies for wireless body area networks: A survey and outlook , 2009, IEEE Communications Magazine.

[5]  L. Ouvry,et al.  Performance analysis of LDR UWB non-coherent receivers in multipath environments , 2005, 2005 IEEE International Conference on Ultra-Wideband.

[6]  K. S. Deepak,et al.  Packet size optimization for energy efficient cooperative Wireless Body Area Networks , 2012, 2012 Annual IEEE India Conference (INDICON).

[7]  Jianfeng Wang,et al.  Applications, challenges, and prospective in emerging body area networking technologies , 2010, IEEE Wireless Communications.

[8]  M. Chiani,et al.  Improved exponential bounds and approximation for the Q-function with application to average error probability computation , 2002, Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE.

[9]  K. J. Ray Liu,et al.  On the energy efficiency of cooperative communications in wireless sensor networks , 2009, TOSN.

[10]  Xiaojing Huang,et al.  Energy-efficient cooperative relay selection for UWB based body area networks , 2013, 2013 IEEE International Conference on Ultra-Wideband (ICUWB).

[11]  Andrea J. Goldsmith,et al.  Energy-efficiency of MIMO and cooperative MIMO techniques in sensor networks , 2004, IEEE Journal on Selected Areas in Communications.

[12]  Huan-Bang Li,et al.  Introduction of SG-BAN in IEEE 802.15 With Related Discussion , 2007, 2007 IEEE International Conference on Ultra-Wideband.