Summary
International Symposium on Antennas and Propagation
2010
Session Number:3TD3
Session:
Number:3TD3-4
New Prediction Method Using Visibility Factor for Path Loss Between Mobile Terminals in Residential Area in Microwave Band
Wataru YAMADA, Motoharu SASAKI, Naoki KITA, Takatoshi SUGIYAMA,
pp.-
Publication Date:2010/11/23
Online ISSN:2188-5079
Summary:
The microwave band below 6 GHz is widely used by wireless communication systems such as wireless LANs [1] and WiMAX [2] systems because path loss is low compared to that for the millimeter-wave band, and the microwave band can provide a wider frequency bandwidth to wireless systems compared to that provided by the VHF band. In addition, the microwave band is used in radar systems and radio astronomy systems. Due to these factors, frequency resources in the microwave band are extremely tight [3]. Therefore, there is strong demand for frequency sharing techniques and systems that enable coexistence of several wireless systems using the same frequency in the same place and time. Fundamentally, investigation of interference propagation characteristics is necessary and important to the study of frequency sharing wireless systems [4]. There are many scenarios to consider in the study of interference propagation, but we focus on the interference propagation between mobile terminals (MTs) in this paper, and study a path loss prediction method for the interference propagation between MTs with a low antenna height. There have been proposed prediction methods for the path loss between a base station (BS) and MT with a low antenna height in a street microcell environment [5-6]. These methods use parameters related to the road (such as the road width and the road length) to calculate the path loss because the dominant path of the travelling waves in a street microcell environment is the path along the road. On the other hand, in a residential area, the transmitted wave travels not only along the road but also between houses and may pass through wooden houses. Therefore, a new parameter is necessary for the path loss prediction method in a residential area. In this paper, the measured results of path loss between MTs with a low antenna height in a residential area are presented. Based on the measured results, a new prediction method using a visibility factor [7] is proposed.