Research of key issues of photonic-assisted compressive sensing technology

ZHA Shengming; ZHU Zhijing; CHI Hao

doi:10.7510/jgjs.issn.1001-3806.2016.04.023

LASER TECHNOLOGY > 2016 > 40(4): 565-570. > DOI: 10.7510/jgjs.issn.1001-3806.2016.04.023

ZHA Shengming, ZHU Zhijing, CHI Hao. Research of key issues of photonic-assisted compressive sensing technology[J]. LASER TECHNOLOGY, 2016, 40(4): 565-570. DOI: 10.7510/jgjs.issn.1001-3806.2016.04.023

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Research of key issues of photonic-assisted compressive sensing technology

College of Information Science & Electronic Engineering, Zhejiang University, Hangzhou 310027, China

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Received Date: May 20, 2015
Revised Date: July 12, 2015
Published Date: July 24, 2016

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Abstract

In order to ensure the zero-mean property of measurement matrix during the process of acquiring wideband signal by using photonic compressive sensing, a parallel structure based on Mach-Zehnder modulators was used to implement the mixing function of input signal and zero-mean random sequence. At the same time, digital domain compensation was employed to reduce the negative effect of modulator nonlinearity on recovery performance. In this way the system had an improved recovery performance within a certain range. The results show that the improved photonic compressive sensing performs better when acquiring wideband sparse signals.
- optoelectronics,
- compressive sensing,
- random demodulation,
- optical mixing,
- modulator nonlinearity

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