naa a22 4500 510792456 CHVBK 20180411083324.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s11277-012-0958-y doi (NATIONALLICENCE)springer-10.1007/s11277-012-0958-y Compressed Sensing via Dimension Spread in Dimension-Restricted Systems [Elektronische Daten] [Wei Lu, Desheng Wang, Yingzhuang Liu, Fan Jin] Compressed sensing (CS) is applied to capture signals at sub-Nyquist rate when the sensing matrix satisfies the restricted isometry property (RIP). When in a dimension-restricted system which has small row dimension and not so good coherence, the RIP and measurement bound will not be satisfied, and compressed sensing can not be applied directly. In this letter, we propose the dimension spread CS to the dimension-restricted system by directed dimension spread and diversity dimension spread, which make the compressed sensing applicable. The spread dimension bounds for the proposed algorithms are deduced to guarantee exact recovery which are also proved by simulations. Meanwhile, the experimental comparisons for the directed dimension spread CS and diversity dimension spread CS are given and different CS recovery algorithms are carried out to show the effectiveness of the proposed algorithms in the dimension-restricted system. The diversity dimension spread CS outperforms the directed dimension spread CS for its effective dimension spread and diversity. The proposed algorithms can be directly applied in channel estimation and multiuser detection in overload system. Springer Science+Business Media New York, 2012 Dimension spread nationallicence Dimension-restricted nationallicence Compressed sensing nationallicence Lu Wei Department of Electronics and Information Engineering, Huazhong University of Science and Technology, Wuhan National Laboratory for Optoelectronics, Wuhan, China aut Wang Desheng Department of Electronics and Information Engineering, Huazhong University of Science and Technology, Wuhan National Laboratory for Optoelectronics, Wuhan, China aut Liu Yingzhuang Department of Electronics and Information Engineering, Huazhong University of Science and Technology, Wuhan National Laboratory for Optoelectronics, Wuhan, China aut Jin Fan University of Southampton, Southampton, UK aut Wireless Personal Communications Springer US; http://www.springer-ny.com 71/4(2013-08-01), 2625-2636 0929-6212 71:4<2625 2013 71 11277 https://doi.org/10.1007/s11277-012-0958-y text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0958-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lu Wei Department of Electronics and Information Engineering, Huazhong University of Science and Technology, Wuhan National Laboratory for Optoelectronics, Wuhan, China aut NATIONALLICENCE 700 1- Wang Desheng Department of Electronics and Information Engineering, Huazhong University of Science and Technology, Wuhan National Laboratory for Optoelectronics, Wuhan, China aut NATIONALLICENCE 700 1- Liu Yingzhuang Department of Electronics and Information Engineering, Huazhong University of Science and Technology, Wuhan National Laboratory for Optoelectronics, Wuhan, China aut NATIONALLICENCE 700 1- Jin Fan University of Southampton, Southampton, UK aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 71/4(2013-08-01), 2625-2636 0929-6212 71:4<2625 2013 71 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer