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Tunable structured laser over full spatial spectrum [PDF]
Light: Science & ApplicationsModern tunable lasers are indispensable instruments in fundamental science and optical frequency applications. With the growing interest in structured light, there’s a need for tunable structured lasers with high transverse electromagnetic (TEM) modal ...
Quan Sheng +14 more
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Frontiers in Plant Science, 2023 IntroductionThree-dimensional spectral distributions of forest stands can provide spatial information on the physiological and biochemical status of forests, which is vital for forest management.
Fan Wang +13 more
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Spatial energy spectrum of primordial magnetic fields [PDF]
Astronomy & Astrophysics, 2004 Here, we analyze the primordial magnetic field transition between a radiative and a matter-dominated universe. The gravitational structure formation affects its evolution and energy spectrum.
Berezhiani +8 more
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A two level multi-antenna blind spectrum detection about spatial spectrum
Dianxin kexue, 2018 In order to improve the perceptual performance,the array spatial spectrum search technology was applied to the spectrum sensing field.A blind spectrum detection algorithm based on two stage detection of spatial spectral values was proposed.Firstly,the ...
Zhiqiang BAO, Yanrui CUI, Xiao XU
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Spatial Spectrum Access Game [PDF]
IEEE Transactions on Mobile Computing, 2015 A key feature of wireless communications is the spatial reuse. However, the spatial aspect is not yet well understood for the purpose of designing efficient spectrum sharing mechanisms. In this paper, we propose a framework of spatial spectrum access games on directed interference graphs, which can model quite general interference relationship with ...
Chen, Xu, Huang, Jianwei
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Spatial spectrum access game [PDF]
Proceedings of the thirteenth ACM international symposium on Mobile Ad Hoc Networking and Computing, 2012 A key feature of wireless communications is the spatial reuse. However, the spatial aspect is not yet well understood for the purpose of designing efficient spectrum sharing mechanisms. In this paper, we propose a framework of spatial spectrum access games on directed interference graphs, which can model quite general interference relationship with ...
Xu Chen, Jianwei Huang
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Spatial Spectrum Estimation of Co-Channel Direct Signal in Passive Radar Based on Coprime Array
Remote Sensing, 2022 The received signal of passive radar based on mobile communication signals contains direct and multipath interference (DMI) signals from multiple co-channel base stations (CCBS). The direct signal spatial spectrum of each CCBS should be obtained first to
Haodong Xu +4 more
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Remote Sensing, 2023 Enhancing the spatial resolution of real-aperture microwave radiometers is an essential research topic. The accuracy of the numerical values of brightness temperatures (BTs) observed using microwave radiometers directly affects the precision of the ...
Guanghui Zhao +4 more
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Spectral Efficiency of One-Bit Sigma-Delta Massive MIMO [PDF]
, 2020 We examine the uplink spectral efficiency of a massive MIMO base station employing a one-bit Sigma-Delta ( \Sigma \Delta ) sampling scheme implemented in the spatial rather than the temporal domain.
Pirzadeh, H +3 more
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A hybrid spectrum opportunities extraction scheme for cognitive wireless communication
Telematics and Informatics Reports, 2022 A realistic and credible model capable of forecasting spectrum occupancy patterns of primary users (PU) needs to be developed to improve the functioning of cognitive radio networks (CRNs) in terms of the spectrum decision process.
Frederick Ojiemhende Ehiagwina +3 more
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