(Dhirubhai Ambani Institute of Information and Communication Technology, 2012) Bhatt, Prakruti Vinodchandra; Chakka, Vijaykumar
Energy detection in frequency domain is a preferred technique for the spectrum sensing and
the accuracy of frequency estimation depends on the Discrete Fourier Transform (DFT) size.
Instead of computing full length (N) DFT of the whole data, a new two level (coarse-fine)
technique for energy detection is proposed. In the first (coarse) level, time averaging of
smaller size (L<
