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Multi-band CIC Filter based Low Complexity Spectrum Sensing Method  

Lee, Su-Bok (숭실대학교 정보통신공학과 통신 및 신호처리 연구실)
Choi, Joo-Pyoung (숭실대학교 정보통신공학과 통신 및 신호처리 연구실)
Lee, Won-Cheol (숭실대학교 정보통신공학과 통신 및 신호처리 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.34, no.10C, 2009 , pp. 992-1000 More about this Journal
Abstract
Available electric wave resources have been limited than frequency demands that increase with the development of radio communication. According to FCC's (Federal Communication Commission) report, 70% of allocated spectrum was unused. This means that the lack phenomenon of electronic wave resources is ineffectively managed compare with the finiteness of frequency resources. According to the recognition of unused frequency within allocated band, this progress has been investigating to identify the unused TV channel and provide radio communication services. This paper proposed the sensing algorithm that efficiently recognizes the frequency resources which does not use and shares with the licensed user through using the multi-band CIC (Cascaded Integrator Comb) filter based on polyphase filter bank. The simulation results verifies that the proposed scheme can obtain the similar performance of variance and relatively low complexity to the existing scheme.
Keywords
Cognitive Radio; Spectrum Sensing; Polyphase Filter Bank; Multi-band CIC Filter;
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