At their beginnings, wireless communications were intended for urban environments, concretely to business indoor areas. However, as the use of wireless networks is continuously increasing, they are extending to new purposes and new environments, mainly outdoor oriented and some of them at vegetation media. New applications appear: from emergency communications to sensor networks, with the common characteristic of having both ends (transmitters and receivers) at low heights. For planning the radio propagation issues of such networks there are multiple studies, even in vegetation media, but most of them are focused on classical base station to mobile terminal configuration.
These new environments and applications need propagation models to plan the systems. In this talk, I will try to introduce our previous research work on measuring and modeling the radio channel at three most commonly used wireless network frequencies: 2.4, 3.5 and 5.8 GHz in a peer to peer configured system, where both, the transmitter and the receiver are located at the same low heights, within vegetation media, including forests and meadows.
Besides the long term analysis, a short-term model is also going to be presented. Fading effects underlying this short-term analysis would determine whether the radio channel could support a stable link or not.
Iñigo Cuiñas received his degree in Telecommunication Engineering in 1996, and his Ph.D. degree in 2000, both from the Universidade de Vigo, Spain. He is currently Professor at the Dept. of Signal Theory and Communications, Universidade de Vigo. He is also Vice-Dean of the School of Telecommunication Engineering, where he teaches courses on Remote Sensing and Engineering to Society links. His main research interest is focused on radio wave propagation in complex environments, as vegetation media; environmental aspects of radiofrequency systems, as the development of techniques to reduce the electromagnetic pollution; as well as to extend the use of radio technologies in rural and vegetation environments. Prof. Cuiñas has authored or co-authored more than 60 papers in journals, 10 chapters at books, and 90 contributions to international conferences. He is also a reviewer of Proceedings of the IEEE, IEEE Transactions on Antennas and Propagation, IEEE Antennas and Wireless Propagation Letters, IEEE Antennas and Propagation Magazine, IEEE Transactions on Vehicular Technology, IEEE Transactions on Broadcasting, IEEE Communications Magazine, IET Microwaves, Antennas and Propagation, IET Communications, IET Sonar Radar and Navigation, and several international conferences.