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http://dx.doi.org/10.12673/jkoni.2013.17.3.298

Spectrum Sensing with Combining Spectral Correlation Density for ATSC Signal Detection  

Yoo, Do-Sik (School of Electronic & Electrical Engineering of Hongik University)
Lim, Jongtae (School of Electronic & Electrical Engineering of Hongik University)
Publication Information
Journal of Advanced Navigation Technology / v.17, no.3, 2013 , pp. 298-305 More about this Journal
Abstract
In this paper, we propose simple combining schemes for sensing ATSC digital television signals with spectral correlation density (SCD). The detection algorithms exploiting the cyclostationarity exhibited by the pilot of ATSC digital television signals usually use the SCD value at a given particular frequency. However, we found that non-zero SCDs are found to be distributed over a certain range of frequencies in multipath fading environment. To utilize a set of non-zero SCD values computed in the vicinity of the pilot location, we formulate a class of combining methods in analogy with the maximal ratio combining, the square law combining and the equal gain combining. We show that the proposed simple combining schemes improve the detection performance by 0.5~1.0dB under multipath fading environments.
Keywords
Cognitive radio; Spectrum sensing; Spectral correlation density; Cyclostationary detection; ATSC DTV;
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  • Reference
1 J. Mitola III and G. Q. Maguire, "Cognitive Radio: Making Software Radios More Personal," IEEE Personal Communications, Vol. 6, No. 4, pp. 13-18, Aug. 1999.   DOI   ScienceOn
2 IEEE std. 802.22, "Cognitive Wireless RAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications: Policies and Procedures for Operation in the TV Bands," IEEE standard 802.22, July 2011.
3 A. Ghasemi and E. Sousa, "Spectrum Sensing in Cognitive Radio Networks: Requirements, Challenges and Ddesign Trade-offs," IEEE Communications Magazine, Vol. 46, No. 4, pp. 32-39, Apr. 2008.   DOI   ScienceOn
4 J. Ma, G. Li, and B. H. Juang, "Signal Processing in Cognitive Radio," Proceedings of the IEEE, Vol. 97, No. 5, pp. 805-823, May 2009.   DOI   ScienceOn
5 T. Yucek and H. Arslan, "A Survey of Spectrum Sensing Algorithms for Cognitive Radio Applications," IEEE Communications Surveys and Tutorials, Vol. 11, No. 1, pp. 116-130, quarter 2009.   DOI   ScienceOn
6 A. Shahi, N. Hoven, and R. Tandra, "Some Fundamental Limits on Cognitive Radio," in Proc. 42nd Annu. Allerton Conf. Communication, Control, and Comuting, Monticello, IL, pp. 1662-1671, Oct. 2004.
7 H.-S. Chen, W. Gao, and D. Daut, "Spectrum Sensing Using Cyclostationary Properties and Applications to IEEE 802.22 WRAN," in Proc. IEEE Global Telecommunications Conference (GLOBECOM '07), pp. 3133-3138, Nov. 2007,
8 ATSC std., "ATSC Recommended Practice: Receiver Performance Guidelines A/74," ATSC standard, Washington D.C., Jun. 2004.
9 J. Proakis and M. Salehi, Digital Communications, 5th ed., McGraw-Hill, 2008.
10 S. Mathur, R. Tandra, S. Shellhammer, and M. Ghosh, "Initial Signal Processing of Captured DTV Signals for Evaluation of Detection Algorithms," IEEE 802.22-06/0158r5, Sep. 2006.
11 C. R. Stevensen, C. Cordeiro, E. Sofer, and G. Chouinard, "Functional Requirements for the 802.22 WRAN Standard," IEEE 802.22-05/0007r45, Sep. 2005.