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http://dx.doi.org/10.7840/KICS.2011.36A.8.723

The Novel ATSC Signal Detection and Data Fusion Algorithms for CR System in TV White Space  

Lim, Sun-Min (한국전자통신연구원 방송통신융합부문 인지무선연구팀)
Jung, Hoi-Yoon (한국전자통신연구원 방송통신융합부문 인지무선연구팀)
Kim, Sang-Won (한국전자통신연구원 방송통신융합부문 인지무선연구팀)
Jeong, Byung-Jang (한국전자통신연구원 방송통신융합부문 인지무선연구팀)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.36, no.8A, 2011 , pp. 723-729 More about this Journal
Abstract
FCC of U.S. permitted usage of unlicensed system on unused spectrum in TV white space after DTV transition. The unlicensed systems are required to avoid harmful interference to licensed users by employing geo-location database and spectrum sensing. The conventional spectrum sensing algorithms for ATSC signal were focused on detection of pilot signal. However, they can not guarantee detection of ATSC signal when pilot signal is attenuated by channel environment such as fading. To overcome drawbacks of conventional schemes, in this paper, we propose a signal detection and data fusion algorithm using cyclo-stationary feature weighted by signal energy. Simulation results verify that the proposed algorithm can provide 2dB SNR gain for 90% detection probability compare with the conventional scheme. We can reduce quiet period for spectrum sensing and improve signal detection probability by employing the proposed algorithm.
Keywords
TV white Space; Spectrum Sensing; Data Fusion; ATSC; Energy; Cyclostationary;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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