{"title":"A Novel Spectrum Sensing Scheme Based on Periodicity of DVB-T Pilot Signals","authors":"Hyung-Weon Cho, Youngyoon Lee, Seung Goo Kang, Dahae Chong,Myungsoo Lee, Chonghan Song, Seokho Yoon","volume":45,"journal":"International Journal of Electronics and Communication Engineering","pagesStart":1393,"pagesEnd":1398,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/13280","abstract":"This paper proposes a novel spectrum sensing technique\r\nfor the digital video broadcasting-terrestrial (DVB-T) systems, which\r\nutilizes the periodicity of pilot signals in the orthogonal frequency\r\ndivision multiplexing (OFDM) symbols. The proposed scheme can\r\novercome the effect of the timing synchronization error by recorrelating\r\nthe correlation values in the same sample distances. The\r\nnumerical results demonstrate that the detection probability performance\r\nof the proposed scheme outperforms that of the conventional\r\nscheme when there exists a timing synchronization error.","references":"[1] D. Cabric, S. M. Mishra, R. W. Brodersen, \"Implementation issues in\r\nspectrum sensing for cognitive radios,\" in Proc. Asilomar Conf. Sig. Syst.\r\nComput., CD-ROM, Pacific Grove, CA, Nov. 2004.\r\n[2] T. Yucek and H. Arslan, \"A survey of spectrum sensing algorithms fo\r\ncognitive radio applications,\" IEEE Commun. Surveys & Tutorials, vol.\r\n11, no. 1, pp. 116-130, 1st Quarter 2009.\r\n[3] Federal Communications Commission, \"Notice of proposed rule making\r\nFCC04-113: Unlicensed operation in the TV broadcast bands,\" ET Docket\r\nNo. 04-186, May 2004.\r\n[4] P. Liu, B.-B. Li, Z.-Y. Lu, and F.-K. Gong, \"A new frequency synchronization\r\nscheme for OFDM,\" IEEE Trans. Consumer Electron., vol. 50,\r\nno. 3, pp. 823-828, Aug. 2004.\r\n[5] K.-T. Lee and J.-S. Seo, \"Pilot-aided frequency offset estimation for\r\ndigital video broadcasting systems,\" IEICE Trans. Commun., vol. E90-B,\r\nno. 11, pp. 3327-3329, Nov. 2007.\r\n[6] ETSI EN 300 744, \"Digital video broadcasting (DVB); framing structure,\r\nchannel coding and modulation for digital terrestrial television,\" ETSI,\r\nTech. Rep., Jan. 2001.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 45, 2010"}