Analysis of a multi-access scheme and asynchronous transmit-only UWB for wireless body area networks

Ultra Wideband (UWB) has many favorable factors for use in a wireless body area network application. The major drawback is the high power consumption of an UWB receiver. One solution to address this problem is to use a transmit-only UWB sensor node. In this paper, we propose a multi-access scheme that is suitable for asynchronous transmit-only UWB wireless body area networks (UWB-WBAN). Each sensor attached on the patient under monitoring is assigned a unique number of UWB pulses per data bit. The number of UWB pulses assigned to the sensors is optimized to improve the bit error rate and system reliability. Simulation shows that through careful selection of the number of pulses for the sensors, it is possible to maintain almost similar bit error probability, regardless of the distance from the receiver.

[1]  Walter Hirt,et al.  Uncoordinated rate-division multiple-access scheme for pulsed UWB signals , 2005, IEEE Transactions on Vehicular Technology.

[2]  M. Weisenhorn,et al.  Receiver architectures for UWB-based transmit-only sensor networks , 2005, 2005 IEEE International Conference on Ultra-Wideband.

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

[4]  Ismail Güvenç,et al.  Adaptation of two types of processing gains for UWB impulse radio wireless sensor networks , 2007, IET Commun..

[5]  Bartlomiej Blaszczyszyn,et al.  Using Transmit-Only Sensors to Reduce Deployment Cost of Wireless Sensor Networks , 2008, IEEE INFOCOM 2008 - The 27th Conference on Computer Communications.