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Signal recovery from random measurements via extended orthogonal matching pursuit

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Signal recovery from random measurements via extended orthogonal matching pursuit
นักวิจัย : Sahoo, Sujit Kumar , Makur, Anamitra
คำค้น : DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::Signal processing
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2558
อ้างอิง : Sahoo, S. K., & Makur, A. (2015). Signal recovery from random measurements via extended orthogonal matching pursuit. IEEE transactions on signal processing, in press. , http://hdl.handle.net/10220/25302 , http://dx.doi.org/10.1109/TSP.2015.2413384 , 183898
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : IEEE transactions on signal processing
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Orthogonal Matching Pursuit (OMP) and Basis Pursuit (BP) are two well-known recovery algorithms in compressed sensing. To recover a d-dimensional m-sparse signal with high probability, OMP needs O (mln d) number of measurements, whereas BP needs only O mln d m number of measurements. In contrary, OMP is a practically more appealing algorithm due to its superior execution speed. In this piece of work, we have proposed a scheme that brings the required number of measurements for OMP closer to BP. We have termed this scheme as OMPα, which runs OMP for (m + αm)-iterations instead of m-iterations, by choosing a value of α ??? [0, 1]. It is shown that OMPα guarantees a high probability signal recovery with O mln d αm+1 number of measurements. Another limitation of OMP unlike BP is that it requires the knowledge of m. In order to overcome this limitation, we have extended the idea of OMPα to illustrate another recovery scheme called OMP∞, which runs OMP until the signal residue vanishes. It is shown that OMP∞ can achieve a close to 0-norm recovery without any knowledge of m like BP.

บรรณานุกรม :
Sahoo, Sujit Kumar , Makur, Anamitra . (2558). Signal recovery from random measurements via extended orthogonal matching pursuit.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Sahoo, Sujit Kumar , Makur, Anamitra . 2558. "Signal recovery from random measurements via extended orthogonal matching pursuit".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Sahoo, Sujit Kumar , Makur, Anamitra . "Signal recovery from random measurements via extended orthogonal matching pursuit."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2558. Print.
Sahoo, Sujit Kumar , Makur, Anamitra . Signal recovery from random measurements via extended orthogonal matching pursuit. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2558.