Channel Measurement and Modeling in Medical Environments

In order to facilitate the deployment of wireless systems in medical environments, channel measurements at 2.4GHz band have been performed in a hospital bedroom. Based on measurements in different line-of-sight (LOS) and non-line-of-sight (NLOS) scenarios, we determine the large-scale path loss and different small-scale fading parameters. Applying the channel models in our MATLAB simulation environment for IEEE 802.15.4 systems, we find that the simulated performance matches with our measured performance using IEEE 802.15.4 devices. This result further validates our proposed channel models.

[1]  Aleksandar Neskovic,et al.  Modern approaches in modeling of mobile radio systems propagation environment , 2000, IEEE Communications Surveys & Tutorials.

[2]  Hans-Jurgen Zepernick,et al.  Multipath channel parameters for the indoor radio at 2.4 GHz ISM band , 1999, 1999 IEEE 49th Vehicular Technology Conference (Cat. No.99CH36363).

[3]  E. Alasaarela,et al.  Wireless sensor and data transmission needs and technologies for patient monitoring in the operating room and intensive care unit , 2005, 2005 IEEE Engineering in Medicine and Biology 27th Annual Conference.

[4]  Xinrong Li,et al.  Indoor Propagation Modeling at 2.4 GHz for IEEE 802.11 Networks , 2005, Wireless and Optical Communications.

[5]  Theodore S. Rappaport,et al.  Wireless communications - principles and practice , 1996 .

[6]  A. M. Abdullah,et al.  Wireless lan medium access control (mac) and physical layer (phy) specifications , 1997 .

[7]  Mahmoud Moghavvemi,et al.  Architecture of a Wireless Sensor Network for Vital Signs Transmission in Hospital Setting , 2008 .

[8]  Wentai Liu,et al.  A Wireless Medical Monitoring Over a Heterogeneous Sensor Network , 2007, 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society.

[9]  Michel Fattouche,et al.  Frequency response and path loss measurements of indoor channel , 1991 .

[10]  Hans-Jurgen Zepernick,et al.  Fading measurements at 2.4 GHz for the indoor radio propagation channel , 1998, 1998 International Zurich Seminar on Broadband Communications. Accessing, Transmission, Networking. Proceedings (Cat. No.98TH8277).

[11]  Henry L. Bertoni,et al.  Pulse propagation characteristics at 2.4 GHz inside buildings , 1996 .

[12]  Larry J. Greenstein,et al.  Moment-method estimation of the Ricean K-factor , 1999, IEEE Communications Letters.

[13]  M. Hamalainen,et al.  Measurement and modelling of an UWB channel at hospital , 2005, 2005 IEEE International Conference on Ultra-Wideband.