Results 21 to 30 of about 13,582,991 (332)
Analytical design and performance analysis of LEO mega chain satellite constellation
Xibei Gongye Daxue Xuebao, 2022 With the development of microsatellite technology and the growth of ground reconnaissance demand, the rapid design of a LEO constellation with minimum satellite number, low revisit time (within 10 minutes), and permanent inter-satellite links has become ...
ZHENG Pengfei, CHEN Hongyu, GUO Chongbin
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Constellation Design for Deep Joint Source-Channel Coding [PDF]
IEEE Signal Processing Letters, 2022 Deep learning-based joint source-channel coding (JSCC) has shown excellent performance in image and feature transmission. However, the output values of the JSCC encoder are continuous, which makes the constellation of modulation complex and dense.
Mengyang Wang +3 more
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Satellite Constellation Design for a Lunar Navigation and Communication System
NAVIGATION: Journal of the Institute of Navigation, 2023 ,
Sriramya Bhamidipati +3 more
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Design of Mega-Constellations for Global Uniform Coverage with Inter-Satellite Links
Aerospace, 2022 Constellation configuration design is a prerequisite and critical step in the construction of a mega-constellation system in low Earth orbit. However, the huge number of satellites and the intricate changes in relative positions among them make the ...
Lu Jia +3 more
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Remote Sensing, 2021 The development of small-satellite technologies allows the low Earth orbit intersatellite link (LEO-LEO) occultation method to observe the Earth’s atmosphere with global coverage and acceptable costs using electromagnetic signals, in which the L/X/K/M ...
Congliang Liu +10 more
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Increasing Achievable Information Rates via Geometric Shaping [PDF]
, 2018 Achievable information rates are used as a metric to design novel modulation formats via geometric shaping. The proposed geometrically shaped 256-ary constellation achieves SNR gains of up to 1.18 dB.Comment: Additional references have been ...
Alvarado, Alex +3 more
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Unified Constellation Design Using Projection Over QAM: Concept and Examples
IEEE Open Journal of the Communications Society, 2023 Beyond fifth generation (B5G) / sixth generation (6G) wireless systems require full utilization of all spectrums. However, hardware devices operating in the high-frequency bands bring a series of non-ideal behaviors, including nonlinear distortion caused
Xiaorui Yan +6 more
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Multi-objective optimization of earth cooperative observation hybrid satellite constellation
Xibei Gongye Daxue Xuebao, 2021 As the demand for comprehensiveness, accuracy, and data fast return of satellite remote sensing information grows, a hybrid constellation with permanent inter-satellite link becomes an inevitable choice for earth cooperative observation.
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A Secure Constellation Design for Polarized Modulation in Wireless Communications
IEEE Access, 2020 This paper presents a modulation constellation design technique for polarization modulation communication in wireless communication. Such constellation can be used for confidential polarization modulation communication on the depolarization channel ...
Degang Sun +3 more
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Sparse Satellite Constellation Design for Global and Regional Direct-to-Satellite IoT Services
IEEE Transactions on Aerospace and Electronic Systems, 2022 In this article, we introduce and design sparse constellations for direct-to-satellite Internet of Things (DtS-IoT). DtS-IoT does not require a ground infrastructure, because the devices are directly connected to low earth orbit satellites acting as ...
Gabriel Maiolini Capez +3 more
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