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EJWCN
2011
197views more  EJWCN 2011»
14 years 12 months ago
Comparison among Cognitive Radio Architectures for Spectrum Sensing
Recently, the growing success of new wireless applications and services has led to overcrowded licensed bands, inducing the governmental regulatory agencies to consider more flex...
Luca Bixio, Marina Ottonello, Mirco Raffetto, Carl...
MA
2011
Springer
241views Communications» more  MA 2011»
14 years 12 months ago
On the distribution of the ratio of the largest eigenvalue to the trace of a Wishart matrix
The ratio of the largest eigenvalue divided by the trace of a p×p random Wishart matrix with n degrees of freedom and identity covariance matrix plays an important role in variou...
Boaz Nadler
SIAMIS
2011
14 years 12 months ago
Gradient-Based Methods for Sparse Recovery
The convergence rate is analyzed for the sparse reconstruction by separable approximation (SpaRSA) algorithm for minimizing a sum f(x) + ψ(x), where f is smooth and ψ is convex, ...
William W. Hager, Dzung T. Phan, Hongchao Zhang
JDCTA
2010
152views more  JDCTA 2010»
14 years 11 months ago
Robust and Geometric Invariant Watermarking Scheme using Block and Gray-Level Histograms
As one of the crucial problems in watermarking, robustness against geometric distortion and JPEG compression becomes more than challenging and problematic. In this paper, a robust...
Chi-Man Pun, Xiaochen Yuan
TASLP
2010
113views more  TASLP 2010»
14 years 11 months ago
Spherical Harmonic Analysis of Wavefields Using Multiple Circular Sensor Arrays
Spherical harmonic decomposition of wavefields is not only an active problem in acoustic signal processing but also a useful tool in a plethora of applications such as 3D beamform...
Thushara D. Abhayapala, Aastha Gupta
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