Selective Correlation Detection of Photonically Generated Ultrawideband RF Signals

Lin, I.S.; Weiner, Andrew M.

doi:10.1109/jlt.2008.927174

Cited by 19 publications

(1 citation statement)

References 16 publications

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“…[1] [2] Lock-in amplifier (LIA) [3] [4] and cross-correlation detection method [5] [6] are effective ways to detect weak periodic signal, but the improvement of their SNIR is at the cost of measurement time. Rapid cross-correlation detection is put forward in this paper in order to obtain high SNIR in short time.…”

Section: Introductionmentioning

confidence: 99%

A Rapid Weak Signal Detection Approach in Resonant Pressure Sensors

Zhang¹,

Xing²,

Zhang³

2015

Proceedings of the 4th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering 2015

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Abstract. In this paper, a rapid detection method for weak signal detection is proposed in resonant pressure sensors. The method is based on cross-correlation with a dedicated phase sensitive detector (PSD) and an improved integrator. The PSD is the sensitive resistor which is an ideal analog multiplier based on Ohm's law. The AC voltage applied to the resistor is modulated by square wave so that the input of improved integrator is signal with alternate inverting phase. The low frequency noise is proved to be eliminated via difference of integrator output and the high frequency noise can be suppressed efficaciously by linear fit. The prototype is made and the experiment results show that the rapid cross-correlation detection has larger signal noise improvement ratio (SNIR) even though its measurement time is 1/25 of the traditional LIA.

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Section: Introductionmentioning

confidence: 99%

A Rapid Weak Signal Detection Approach in Resonant Pressure Sensors

Zhang¹,

Xing²,

Zhang³

2015

Proceedings of the 4th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering 2015

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Comparative analysis of long-haul system based on SSB modulation utilising dual parallel Mach–Zehnder modulators

Paloi

Haxha

2018

Opt Quant Electron

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In this paper, we have proposed a long-haul optical transmission system, based on a single sideband (SSB) modulation scheme. Analytical and simulation models have been developed, optimised and demonstrated for the proposed SSB system configurations. The SSB modulation scheme was proposed to overcome dispersion in the fibre. We have shown that the related link losses can be minimized by increasing the quality of the optical signal at the modulation. We have optimised the radio over fibre (RoF) configuration scheme based on Dual Parallel Dual Drive Mach Zehnder Modulator (DP-DDMZM), thereby increasing transmission length of the fibre. With the proposed SSB, by suppressing some of the harmonics and cancelling one of the sidebands, we have halved the RF power fading and interference. The developed analytical (theoretical/mathematical) model agrees very well with the simulation results using two (both) different commercial simulation tools. The optical signal is boosted while minimizing the number of repeaters. We report a SSB configuration, compensation and amplification with individual spans of 150 km, by extending the length of the link up to 3250km. The proposed system configuration exhibits high performance with less complexity and lower cost.

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Hybrid OCS/MDRZ wavelength division multiplexing millimeter wave radio over free space system

Magidi

Jabeena

2020

Int. j. inf. tecnol.

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Selective Correlation Detection of Photonically Generated Ultrawideband RF Signals

Cited by 19 publications

References 16 publications

A Rapid Weak Signal Detection Approach in Resonant Pressure Sensors

A Rapid Weak Signal Detection Approach in Resonant Pressure Sensors

Comparative analysis of long-haul system based on SSB modulation utilising dual parallel Mach–Zehnder modulators

Hybrid OCS/MDRZ wavelength division multiplexing millimeter wave radio over free space system

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