Results 1 to 10 of about 70,027 (278)
The LLAMA Brazilian-Argentinian radiotelescope project: progress in Brazil and BRICS collaboration [PDF]
Anais da Academia Brasileira de Ciências, 2021 We present briefly the LLAMA sub-mm radiotelescope, a joint project of Argentina and Brazil, being mounted in the Andes, Argentina, at 4800 m altitude. Here we focus on the activities that are going on mostly under the responsibility of Brazil, like the ...
JACQUES R.D. LÉPINE +18 more
doaj +2 more sources
Simulation of Optical Performance for a Solar Cavity Receiver Arranged With Spiral Tubes
发电技术, 2023 Using TracePro optical software, the differences in optical performance of solar cavity receivers with or without spiral tubes were simulated, and the effects of the reflectivity of inner wall of cavity and the outer diameter and pitch of the spiral ...
WANG Xiaowen +5 more
doaj +1 more source
Photonics, 2023 This article presents the main results and new plans for the development of receivers which are cooled cryogenically to deep cryogenic temperatures and used in optical and radio astronomy research at the Special Astrophysical Observatory of the Russian ...
Yurii Balega +17 more
doaj +1 more source
Linear optics and photodetection achieve near-optimal unambiguous coherent state discrimination [PDF]
Quantum, 2023 Coherent states of the quantum electromagnetic field, the quantum description of ideal laser light, are prime candidates as information carriers for optical communications.
Jasminder S. Sidhu +3 more
doaj +1 more source
Accurate Characterization for Continuous-Time Linear Equalization in CMOS Optical Receivers
IEEE Access, 2022 Recently published CMOS optical receivers consist of a limited-bandwidth first-stage transimpedance amplifier (TIA) followed by an equalizer. Limiting the TIA’s bandwidth improves the gain and reduces the noise but introduces a significant inter ...
Diaaeldin Abdelrahman, Mohamed Atef
doaj +1 more source
Power limits with adjustable 10G receiver parameters for A-RoF transmission
Elektronika ir Elektrotechnika, 2023 Current paper characterizes the performance of the three-radio-frequency-channels, orthogonal-frequency-division-multiplexed (OFDM) radio-over-fiber (RoF) transmission system in terms of error-vector-magnitude and received optical signal power for a ...
Inna Kurbatska +5 more
doaj +1 more source
Dianxin kexue, 2022 The deployment of emerging network infrastructure such as hyper-scale datacenters urgently requires ultra-high capacity but low-cost short-reach optical interconnects.Conventional intensity modulation and direct detection possesses a simple receiver ...
Honglin JI +4 more
doaj +2 more sources
Hybrid SPAD/PD Receiver for Reliable Free-Space Optical Communication
IEEE Open Journal of the Communications Society, 2020 Free-space optical (FSO) communication provides wireless optical connectivity with high data rates and low-cost implementation; however, its performance is strongly influenced by the power attenuation due to the infrequent adverse weather conditions ...
Shenjie Huang, Majid Safari
doaj +1 more source
A Roadmap for Gigabit to Terabit Optical Wireless Communications Receivers
Sensors, 2023 Silicon photomultipliers’ relatively large areas and ability to detect single photons make them attractive as receivers for optical wireless communications.
William Matthews, Steve Collins
doaj +1 more source
Journal of Telecommunications and Information Technology, 2013 In the last decade a new idea has been suggested for receivers of communication systems, namely, in microwave receivers’ architecture. Though superheterodyne radio-frequency receivers are best suited to the needs of contemporary wireless communication ...
Hovik V. Baghdasaryan +2 more
doaj +1 more source