期刊
CHINESE JOURNAL OF ELECTRONICS
卷 25, 期 3, 页码 551-555出版社
TECHNOLOGY EXCHANGE LIMITED HONG KONG
DOI: 10.1049/cje.2016.05.022
关键词
Compressed sensing; Projection matrix; Block optimization; Mutual coherence
资金
- National Natural Science Foundation of China [61100215, 61311140261, 61379115, 61372049, 61300039]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology [2012R1A1A1017284]
- Ministry of Science, ICT and Future Planning of Korea under the Global IT Talent Support Program [NIPA-2014-H0904-14-1004]
- National IT Industry Promotion Agency, Hunan Provincial Natural Science Foundation of China [13JJ8006, 12JJ9021, 14JJ3130]
- Construct Program of the Key Discipline in Hunan Province and College Students Innovation Project [2013XTUXJ47]
- National Research Foundation of Korea [2012R1A1A1017284, 22A20130000118] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The objective of optimizing a projection matrix is to decrease the mutual coherence between a projection matrix and a basis matrix. In this paper, a novel block-based method is proposed to design a projection matrix in compressed sensing. Here, the projection matrix is divided into two blocks. The relationship between the two blocks was obtained by reasoning and proving. Theoretical analysis demonstrates that the mutual coherence between the whole projection matrix and the whole basis matrix keeps as good as the mutual coherence between the block matrix and blocked basis matrix. Experimental results show that the proposed method obtains better performance compared to existing methods.
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