Broadband Spatial Spectrum Estimation Based on Space-Time Minimum Variance Distortionless Response and Frequency Derivative Constraints
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Access"
DOI: 10.1109/access.2023.3258978
Abstract: The two-dimensional optimization capability of the space-time minimum variance distortionless response (STMVDR) can improve the spatial spectrum estimation performance of the broadband beamformer with limited samples, but its high sensitivity to frequency errors may lead… read more here.
Keywords: frequency derivative; minimum variance; frequency; spatial spectrum ... See more keywords
Modeling the Kriging-Aided Spatial Spectrum Sharing Over Log-Normal Channels
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Wireless Communications Letters"
DOI: 10.1109/lwc.2018.2890644
Abstract: In this letter, we first show that the error in the received signal power estimation with an optimally interpolated radio environment map (REM) over a shadowing environment can be modeled using a correlation coefficient, similar… read more here.
Keywords: spectrum sharing; spatial spectrum; aided spatial; spectrum ... See more keywords
Spatial Spectrum Sharing for Satellite and Terrestrial Communication Networks
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Aerospace and Electronic Systems"
DOI: 10.1109/taes.2018.2889585
Abstract: With the increasing demands on frequency resources, spectrum sharing between the satellite and terrestrial systems becomes prominent, especially when it comes to the millimeter wave (mmWave) bands. In this paper, we propose a general spectrum… read more here.
Keywords: spectrum sharing; spatial spectrum; sharing satellite; protection area ... See more keywords
Parallel implementation of the informative areas generation method in the spatial spectrum domain
Sign Up to like & getrecommendations! Published in 2017 at "Computer Optics"
DOI: 10.18287/2412-6179-2017-41-4-585-587
Abstract: This paper proposes a parallel implementation of th e image informative segments extraction method. The images are segmented in the spatial spectrum do main. The median energy in each selected segment is viewed upon as… read more here.
Keywords: spatial spectrum; implementation; informative areas; parallel implementation ... See more keywords
Spatial spectrum of coherence signal for a defocused object images in digital holographic microscopy with partially spatially coherent illumination
Sign Up to like & getrecommendations! Published in 2018 at "Computer Optics"
DOI: 10.18287/2412-6179-2018-42-3-414-423
Abstract: We study the effect of a decrease in the magnitude of the coherence signal in high-frequency spatial spectrum for a defocused object image in transmission digital holographic microscopy with quasimonochromatic partially spatially coherent illumination. A… read more here.
Keywords: coherence signal; partially spatially; defocused object; spatial spectrum ... See more keywords