A Novel Spectrum Sensing Scheme Based on Periodicity of DVB-T Pilot Signals

This paper proposes a novel spectrum sensing technique for the digital video broadcasting-terrestrial (DVB-T) systems, which utilizes the periodicity of pilot signals in the orthogonal frequency division multiplexing (OFDM) symbols. The proposed scheme can overcome the effect of the timing synchronization error by recorrelating the correlation values in the same sample distances. The numerical results demonstrate that the detection probability performance of the proposed scheme outperforms that of the conventional scheme when there exists a timing synchronization error.

Authors:

• Hyung-Weon Cho
• Youngyoon Lee
• Seung Goo Kang
• Dahae Chong
• Myungsoo Lee
• Chonghan Song
• Seokho Yoon

Keywords:

• DVB-T
• spectrum sensing
• OFDM
• timing synchronizationerror.

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