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Average Information based Spectrum Sensing for Cognitive Radio

AVERAGE INFORMATION BASED SPECTRUM SENSING FOR COGNITIVE RADIO

  • Project Code :
  • TMMACO14
  • .

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AVERAGE INFORMATION BASED SPECTRUM SENSING FOR COGNITIVE RADIO

Wireless Communication resources are power and bandwidth. Hence conservation and proper utilization of spectrum is needed. Spectrum sensing is important since the microwave band is already crowded with many applications. In this paper, a spectrum sensing strategy based on the average information is proposed. The average information is Entropy as per statistical theory of communication. The average information with and without the presence of primary users are calculated using MATLAB. The Entropy when the primary user is not present is H0 hypothesis is found and a threshold is calculated. The Entropy is calculated when the Primary user is present which is H1 Hypothesis. The primary user presence is identified if Entropy for H1 hypothesis is less than the threshold. Histogram is used to calculate the number of samples in each bin. The probability of detection is simulated for various values of SNR. It is found that after an SNR of -8dB, the probability of detection is correct.

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