Results 21 to 30 of about 4,549,741 (268)
Applied Sciences, 2022 At 2 µm wavelengths (149.9 THz), hollow-core photonics band gap fibers have higher light power damage thresholds, stable polarization states, and lower losses of 0.1 dB/km.
Di Ji +4 more
doaj +1 more source
Experimental Demonstration of Bidirectional OFDM/OQAM-MIMO Signal Over a Multicore Fiber System
IEEE Photonics Journal, 2016 A bidirectional transmission and massive multi-input multi-output (MIMO) enabled radio over a multicore fiber system with centralized optical carrier delivery is experimentally investigated in this paper.
Jiale He +7 more
doaj +1 more source
Feasibility Study of Practical AoA Estimation Using Compressed CSI on Commercial WLAN Devices
IEEE Access, 2022 Wireless local area network (WLAN)-based localization is key for advanced indoor Internet-of-Things and embedded sensor applications. To further improve the accuracy of indoor localization, attention has been focused on WLAN-based indoor localization ...
Takeru Fukushima +5 more
doaj +1 more source
Three-Dimensional Adaptive Modulation and Coding for DDO-OFDM Transmission System
IEEE Photonics Journal, 2017 We propose a 3-D adaptive loading algorithm (ALA), which can individually allocate proper modulation formats, power levels, and the forward error correction codes to each orthogonal frequency division multiplexing (OFDM) subcarrier according to the ...
Xi Chen +6 more
doaj +1 more source
Access to Information in Belgium [PDF]
, 2018 Prior to the Second World War, freedom of expression and freedom of the press were mainly seen from the view point of being an active right of the press to provide information without interference from the government. Since then there has been an evolution where freedom of information is also seen from the point of view of the recipient as a passive ...
Keunen, Stef, Van Garsse, Steven
openaire +3 more sources
IEEE Photonics Journal, 2019 A simple method based on a designed pseudo-pilot is proposed for both carrier frequency offset (CFO) and phase noise (PN) estimation for the coherent optical offset-quadratic-amplitude modulation (QAM) based filterbank multicarrier (CO-FBMC/OQAM ...
Biyu You +6 more
doaj +1 more source
Optimization with Access to Auxiliary Information
CoRR, 2022 Published in Transactions on Machine Learning Research (02/2024)
El Mahdi Chayti +1 more
openaire +3 more sources
IEEE Photonics Journal, 2018 We propose and demonstrate a quasi-distributed fiber sensor based on cascaded microfiber Fabry–Perot interferometers (MFPIs) for simultaneous refractive index (RI) and temperature measurement.
Yang Xiang +6 more
doaj +1 more source
Accessibility in Information Retrieval [PDF]
, 2008 This paper introduces the concept of accessibility from the field of transportation planning and adopts it within the context of Information Retrieval (IR). An analogy is drawn between the fields, which motivates the development of document accessibility measures for IR systems. Considering the accessibility of documents within a collection given an IR
Leif Azzopardi, Vishwa Vinay
openaire +2 more sources
IEEE Photonics Journal, 2017 An extension of the conventional dual Schottky diode-based predistortion circuit (PDC) is proposed to linearize directly modulated radio over fiber (RoF) system.
Shichao Chen +8 more
doaj +1 more source