Title :
Location and Propagation Status Sensing of Interference Signals in Cognitive Radio
Author :
Kashiki, Kanshiro ; Nohara, Mitsuo ; Imata, Satoshi ; Sanoh, Yukiko ; Kawamura, Masahiko
Author_Institution :
Technology Development Center, KDDI R&D Laboratories Inc., 3-10-10, Iidabashi, Chiyoda-ku, Tokyo, 102-8460 Japan, ka-kashiki@kddilabs.jp
Abstract :
In a Cognitive Radio system, it is essential to recognize and avoid sources of interference signals. This paper describes a study on a location sensing scheme of an interference signal, which utilizes multi-beam phased array antenna for cognitive wireless networks. This paper also covers its estimation accuracy of the interference location for the radio communication link using an OFDM signal such as WiMAX. Furthermore, a method to estimate propagation status is discussed, which is obtained from the frequency spectrum of the received OFDM interference signal. This spectrum can be monitored by using a software defined radio receiver.
Keywords :
Antenna arrays; Antennas and propagation; Cognitive radio; Frequency estimation; Interference; OFDM; Phased arrays; Radio communication; WiMAX; Wireless networks; Cognitive Radio; Estimation ofpropagation status; Interference source; Location sensing scheme; Modeling and software simulation; Multi-beam antenna; Spectrum monitoring; component;
Conference_Titel :
Cognitive Radio Oriented Wireless Networks and Communications, 2007. CrownCom 2007. 2nd International Conference on
Conference_Location :
Orlando, FL, USA
Print_ISBN :
978-1-4244-0814-6
Electronic_ISBN :
978-1-4244-0815-3
DOI :
10.1109/CROWNCOM.2007.4549782
