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Research of Large Capacity Optical Transmission System based on S/C/L Band
Guangtongxin yanjiu, 2022 The optical transmission system based on all-band is considered to be one of the methods to effectively improve the transmission capacity of optical communication.
Xu ZHANG +3 more
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Reconfigurable multi-band quadrature ΣΔ modulators [PDF]
2011 7th Conference on Ph.D. Research in Microelectronics and Electronics, 2011 A new design methodology for reconfigurable quadrature band-pass ΣΔ modulator is proposed. The methodology uses architectures, which locks various range of IF frequencies to the sampling frequency for lower order quadrature modulators. A gereralized integrator based architecture is developed from the delay architectures.
Nithin Kumar Y.B. +2 more
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Analysis and Digital Predistortion of in-Band Cross Modulation in Concurrent Multi-Band Transmitters
IEEE Access, 2022 In multiband transmitters where two or more radios share the same power amplifier (PA), interferences can usually be kept below an acceptable level with the help of multi-band digital predistortion (DPD) techniques.
Yunsik Hahn +5 more
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Energies, 2023 Outphasing power amplifiers (OPAs) can be used in wireless information and power transfer systems due to their excellent conversion efficiency. With the rapid advancement of technology, there is a strong demand for OPAs to achieve wideband and multi-band
Yu Zhang +7 more
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Visible light communications: multi-band super-Nyquist CAP modulation [PDF]
Optics Express, 2019 In this paper, we experimentally demonstrate the performance of a non-orthogonal multi-band super-Nyquist carrier-less amplitude and phase (m-SCAP) modulation for visible light communications (VLC). We break the orthogonality between sub-bands in the frequency domain by compressing the spectrum, purposely overlapping them, and introducing inter-band ...
P. A. Haigh +4 more
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JPhys Photonics, 2023 High integration of modern microwave circuits and systems puts forward higher requirements for multi-function and electromagnetic compatibility (EMC) performance of transmission channels.
Ling Yun Niu +5 more
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IEEE Photonics Journal, 2021 Telecommunication networks are becoming the central linking institution of the Fourth Industrial Revolution. To cope with the associated capacity and connectivity challenges, transportation networks may explore the -neglected so far- remaining ...
Dimitris Uzunidis +4 more
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Experimental multi-user VLC system using non-orthogonal multi-band CAP modulation [PDF]
Optics Express, 2020 This paper provides experimental results for a multi-user visible light communications system using multi-band carrier-less amplitude and phase (m-CAP) modulation scheme. We optimize the system performance by adapting pulse shaping filter parameters, subcarrier spacing and allocating different baud rates to individual sub-bands called allocated m-CAP ...
P. Pešek +5 more
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Nanomaterials, 2021 We propose a high quality-factor (Q-factor) multi-Fano resonance hybrid metamaterial waveguide (HMW) sensor. By ingeniously designing a metal/dielectric hybrid waveguide structure, we can effectively tailor multi-Fano resonance peaks’ reflectance ...
Hongyan Yang +7 more
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Multi-dimensional band structure spectroscopy in the synthetic frequency dimension
Light: Science & Applications, 2023 The concept of synthetic dimensions in photonics provides a versatile platform in exploring multi-dimensional physics. Many of these physics are characterized by band structures in more than one dimensions. Existing efforts on band structure measurements
Dali Cheng +3 more
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