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http://dx.doi.org/10.7840/KICS.2011.36A.5.536

The Efficient Detection Algorithm of Various CR signals using Channel Bonding in TV White Space  

Lim, Sun-Min (한국전자통신연구원 방송통신융합부문 인지무선연구팀)
Jung, Hoi-Yoon (한국전자통신연구원 방송통신융합부문 인지무선연구팀)
Jeong, Byung-Jang (한국전자통신연구원 방송통신융합부문 인지무선연구팀)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.36, no.5A, 2011 , pp. 536-542 More about this Journal
Abstract
For efficient utilization of spectrum resources in TV white space after DTV transition, FCC allowed usage of the spectrum for CR system. The CR system is required to cognize channel usage state for utilizing the unused spectrum in TV white space which coexists various primary and secondary systems. In the meantime, as a demand for high throughput communication had been increased recently, CR systems also consider to adopt channel bonding technology, thus spectrum sensing for channel bonded system is essentially required. In this paper, we propose a novel spectrum sensing algorithm for channel bonding system using a single channel receiver. For IEEE 802.l1af signal, the proposed algorithm provide detection probability of 90% with false alarm probability 10% at SNR -18dB for single channel system and at SNR -7dB for 8 channel bonded system, respectively. Utilizing the proposed scheme, we can detect channel bonded signal using only a single receiver, therefore system overhead for spectrum sensing can be reduced significantly.
Keywords
TV White Space; Cognitive Radio; Spectrum Sensing; Channel Bonding; OFDM;
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