IEICE Transactions on Communications
Online ISSN : 1745-1345
Print ISSN : 0916-8516
Special Section on Cognitive Radio and Spectrum Sharing Technology
Location and Propagation Status Sensing of Interference Signals in Cognitive Radio
Kanshiro KASHIKIMitsuo NOHARASatoshi IMATAYukiko KISHIKI
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2008 Volume E91.B Issue 1 Pages 77-84

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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 for interference signals, which utilizes multibeam phased array antenna for cognitive wireless networks. This paper also elucidates its estimation accuracy of the interference location for the radio communication link using an OFDM signal such as WiMAX. Furthermore, we use the frequency spectrum of the received OFDM interference signal, to create a method that can estimate the propagation status. This spectrum can be monitored by using a software defined radio receiver.

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© 2008 The Institute of Electronics, Information and Communication Engineers
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