TY - GEN
T1 - Universal compressed sensing
AU - Jalali, Shirin
AU - Poor, H. Vincent
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/8/10
Y1 - 2016/8/10
N2 - In this paper, the problem of developing universal algorithms for noiseless compressed sensing of stochastic processes is studied. First, Rényi's notion of information dimension (ID) is generalized to analog stationary processes. This provides a measure of complexity for such processes and is connected to the number of measurements required for their accurate recovery. Then the so-called Lagrangian minimum entropy pursuit (Lagrangian-MEP) algorithm, originally proposed by Baron et al. as a heuristic universal recovery algorithm, is studied. It is shown that, if the normalized number of randomized measurements is larger than the ID of the source process, for the right set of parameters, asymptotically, the Lagrangian-MEP algorithm recovers any stationary process satisfying some mixing constraints almost losslessly, without having any prior information about the source distribution.
AB - In this paper, the problem of developing universal algorithms for noiseless compressed sensing of stochastic processes is studied. First, Rényi's notion of information dimension (ID) is generalized to analog stationary processes. This provides a measure of complexity for such processes and is connected to the number of measurements required for their accurate recovery. Then the so-called Lagrangian minimum entropy pursuit (Lagrangian-MEP) algorithm, originally proposed by Baron et al. as a heuristic universal recovery algorithm, is studied. It is shown that, if the normalized number of randomized measurements is larger than the ID of the source process, for the right set of parameters, asymptotically, the Lagrangian-MEP algorithm recovers any stationary process satisfying some mixing constraints almost losslessly, without having any prior information about the source distribution.
KW - Compressed Sensing
KW - Information Dimension
KW - Mixing processes
KW - Universal coding
UR - http://www.scopus.com/inward/record.url?scp=84985905101&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84985905101&partnerID=8YFLogxK
U2 - 10.1109/ISIT.2016.7541723
DO - 10.1109/ISIT.2016.7541723
M3 - Conference contribution
AN - SCOPUS:84985905101
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 2369
EP - 2373
BT - Proceedings - ISIT 2016; 2016 IEEE International Symposium on Information Theory
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2016 IEEE International Symposium on Information Theory, ISIT 2016
Y2 - 10 July 2016 through 15 July 2016
ER -