Summary
International Symposium on Antennas and Propagation
2010
Session Number:3TA2
Session:
Number:3TA2-3
An Adaptive Array Using Pseudo-noise for Interference Suppression in ITS Communications
Hiroshi Matsuda, Mitoshi Fujimoto, Toshikazu Hori,
pp.-
Publication Date:2010/11/23
Online ISSN:2188-5079
Summary:
Terrestrial broadcasting will be shifted from analogue broadcasting to digital broadcasting in Japan. After the digitization, a frequency band from 715 to 725 [MHz] will be utilized for ITS (Intelligent Transportation System), and this "ITS band" will be assigned between the bands of television broadcasting and mobile communications [1]. It is worried that the ITS may suffer interference from broadcast system or mobile communication system. To suppress the interference, the authors have proposed a power inversion adaptive array [2]-[4] with band-pass filters. However, the system tends to suppress the desired signal when the arrival interference is very weak. In this paper, a novel technique using pseudo-noise is proposed to avoid the problem. Numerical results show that excellent SINR values can be obtained by the proposed technique even if the arrival interference is very weak. Moreover, optimum pseudo-noise level is discussed.