1. The bluetooth standard version 1b, available at: http://www.bluetooth.com
2. ‘IEEE 802.15.4, wireless medium access control (MAC) and physical layer (PHY) specifications for low-rate wireless personal area networks (LR-WPANs)’, Technical Report, IEEE, October, 2003
3. The indoor radio propagation channel
4. Numerical analysis of bodyworn UHF antenna systems