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ICASSP
2011
IEEE
14 years 9 months ago
Multiantenna detection under noise uncertainty and primary user's spatial structure
Spectrum sensing is a challenging key component of the Cognitive Radio paradigm, since primary signals must be detected in the face of noise uncertainty and at signal-to-noise rat...
David Ramírez, Gonzalo Vazquez-Vilar, Rober...
PIMRC
2008
IEEE
16 years 6 days ago
BER analysis of single-carrier MPAM in the presence of ADC quantization noise
— Noisy radio frequency (RF) circuits tend to degrade the system performance, especially in high frequency communication systems. The performance analysis of such systems is norm...
Umar H. Rizvi, Gerard J. M. Janssen, Jos H. Weber
SIAMSC
2008
145views more  SIAMSC 2008»
15 years 5 months ago
Fast Multilevel Algorithm for a Minimization Problem in Impulse Noise Removal
An effective 2-phase method for removing impulse noise was recently proposed. Its phase 1 identifies noisy pixel candidates by using median-type filters. Then in phase 2, it resto...
Raymond H. Chan, Ke Chen 0002
JMM2
2007
59views more  JMM2 2007»
15 years 5 months ago
Single-Ended Quality Measurement of Noise Suppressed Speech Based on Kullback-Leibler Distances
— In this paper, a single-ended quality measurement algorithm for noise suppressed speech is described. The proposed algorithm computes fast approximations of KullbackLeibler dis...
Tiago H. Falk, Hua Yuan, Wai-Yip Chan
ICPR
2010
IEEE
15 years 4 months ago
3D Vertebrae Segmentation in CT Images with Random Noises
Exposure levels (X-ray tube amperage and peak kilovoltage) are associated with various noise levels and radiation dose. When higher exposure levels are applied, the images have hi...
Melih Seref Aslan