Liu, R and Yan, W and Wassell, IJ and Soga, K (2009) Can frequency diversity provide performance gains for WSNs at 2.4GHz for the fire hydrant to above ground channel. In: UNSPECIFIED pp. 545-548..Full text not available from this repository.
Wireless Sensor Networks (WSNs) which utilise IEEE 802.15.4 technology offer the potential for low cost deployment and maintenance compared with conventional wired sensor networks, enabling effective and efficient condition monitoring of aged civil engineering infrastructure. We will address wireless propagation for a below to above ground scenario where one of the wireless nodes is located in a below ground fire hydrant chamber to permit monitoring of the local water distribution network. Frequency Diversity (FD) is one method that can be used to combat the damaging effects of multipath fading and so improve the reliability of radio links. However, no quantitative investigation concerning the potential performance gains from the use of FD at 2.4GHz is available for the outlined scenario. In this paper, we try to answer this question by performing accurate propagation measurements using modified and calibrated off-the-shelf 802.15.4 based sensor nodes. These measurement results are also compared with those obtained from simulations that employ our Modified 2D Finite-Difference Time-Domain (FDTD) approach. ©2009 IEEE.
|Item Type:||Conference or Workshop Item (UNSPECIFIED)|
|Divisions:||Div D > Geotechnical and Environmental|
|Depositing User:||Cron job|
|Date Deposited:||16 Jul 2015 14:11|
|Last Modified:||03 Aug 2015 07:40|