A tree-structured DFT filter bank based spectrum detector for estimation of radio channel edge frequencies in cognitive radios.
M. NarendarA. Prasad VinodA. S. MadhukumarAnoop Kumar KrishnaPublished in: Phys. Commun. (2013)
Keyphrases
- filter bank
- frequency domain
- frequency spectrum
- cognitive radio
- fourier transform
- subband
- image coding
- signal processing
- multiscale
- wireless systems
- perfect reconstruction
- spatial domain
- multiresolution
- edge detection
- low pass
- discrete cosine transform
- discrete fourier transform
- optimal filter
- subband coding
- tree structure
- wavelet packet
- reconstruction error
- wireless communication
- edge information
- lifting scheme
- edge detector
- wavelet filters
- computer vision
- radon transform
- wavelet transform
- compressed images
- denoising
- feature vectors
- pattern recognition
- image compression
- computationally efficient
- steerable pyramid