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A direct digital frequency synthesizer with fourth-order phase domain ΔΣ noise shaper and 12-bit current-steering DAC.
Fa Foster Dai
Weining Ni
Yin Shi
Richard C. Jaeger
Published in:
IEEE J. Solid State Circuits (2006)
Keyphrases
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fourth order
noise removal
noise reduction
anisotropic diffusion
denoising
high order
estimation error
edge preservation
low frequency
smooth regions
gaussian noise
image interpolation
nonlinear diffusion
signal to noise ratio
partial differential equations
noisy images
diffusion equation
higher order