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Sparse Signals Reconstruction via Adaptive Iterative Greedy Algorithm

International Journal of Computer Applications • 2014
العودة
معلومات البحث
المؤلفون Ahmed Aziz, Ahmed Salim and Walid Osamy
الكلمات المفتاحية Signal reconstruction, Signal processing
المجلة العلمية International Journal of Computer Applications
الناشر Foundation of Computer Science
المجلد 90
العدد 17
الصفحات Not Available
publication.type International
رابط البحث Open Link
المواد المرفقة Not Available
الملخص
Compressive sensing(CS) is an emerging research field that
has applications in signal processing, error correction, medical
imaging, seismology, and many more other areas. CS promises to
efficiently reconstruct a sparse signal vector via a much smaller
number of linear measurements than its dimension. In order
to improve CS reconstruction performance, this paper present
a novel reconstruction greedy algorithm called the Enhanced
Orthogonal Matching Pursuit (E-OMP). E-OMP falls into the
general category of Two Stage Thresholding(TST)-type algorithms
where it consists of consecutive forward and backward stages.
During the forward stage, E-OMP depends on solving the least
square problem to select columns from the measurement matrix.
Furthermore, E-OMP uses a simple backtracking step to detect
the previous chosen columns accuracy and then remove the false
columns at each time. From simulations it is observed that E-OMP
improve the reconstruction performance better than Orthogonal
Matching Pursuit (OMP) and Regularized OMP (ROMP).