Results 21 to 30 of about 60,224 (140)
Management of Digital Video Broadcasting Services in Open Delivery Platforms [PDF]
, 2007 The future of Digital Video Broadcasting (DVB) is moving towards solutions offering an efficient way of carrying interactive IP multimedia services over digital terrestrial broadcasting networks to handheld terminals.
Casagranda, P +4 more
core +1 more source
The Rise of Refractory Transition‐Metal Nitride Films for Advanced Electronics and Plasmonics
Advanced Materials Interfaces, EarlyView.Transition‐metal nitrides (TMNs) are exceptional materials with high stability, biocompatibility, and semiconductor integration, which have been extensively employed in various fields. However, the epitaxial growth of TMN films remains a challenge. The absence of high‐quality TMNs limits the understanding of their condensed matter physics and hinders ...
Jiachang Bi +3 more
wiley +1 more source
International Journal of Satellite Communications and Networking, EarlyView., 2023 In this paper, we investigate the application of signal‐to‐leakage‐plus‐noise ratio (SLNR) beamforming to low Earth orbit non‐terrestrial networks. The SLNR criterion aims at maximizing the received desired signal power for each user while minimizing the overall interference power caused by each user to all other co‐channel receivers. We show that such
M. Rabih Dakkak +3 more
wiley +1 more source
Risk-Informed Interference Assessment for Shared Spectrum Bands: A Wi-Fi/LTE Coexistence Case Study
, 2017 Interference evaluation is crucial when deciding whether and how wireless technologies should operate. In this paper we demonstrate the benefit of risk-informed interference assessment to aid spectrum regulators in making decisions, and to readily convey
de Vries, J. Pierre +4 more
core +1 more source
Advanced Optical Materials, EarlyView.For an amphibious high‐resolution compound eye vision system, environment‐adaptive self‐aligned waveguides are integrated with high‐density flat microlenses. Fabrication, optical performance, and environmental adaptability are investigated, demonstrating stable focusing, efficient light collection, and enhanced spatial resolution.
Hyuk Jae Jang +4 more
wiley +1 more source
Monopoly quality degradation and regulation in cable television [PDF]
, 2007 Using an empirical framework based on the Mussa-Rosen model of monopoly quality choice, we calculate the degree of quality degradation in cable television markets and the impact of regulation on those choices.
Crawford, Gregory S., Shum, Matthew
core +3 more sources
Scripta Nova-revista Electronica De Geografia Y Ciencias Sociales, 2004 The objective of this text is to analyze the characteristics of employment in the telecommunications industry at the state of Rio Grande do Sul, Brazil, overcoat since the privatization occurred in 1998. The analysis encompasses eleven companies providing different kinds of services and located at several levels of the new productive weft, organized ...
openaire +4 more sources
Effect of Core Geometry on Frequency Correlations and Channel Capacity of a Multimode Optical Fiber
Advanced Photonics Research, EarlyView.Structured wavefronts focused at the output of multimode fibers reveal a distinct spatial dependence of frequency correlation bandwidth between circular and rectangular cores. Unlike conventional circular‐core fibers, rectangular‐core fibers maintain uniform bandwidth across all transverse locations, enabling over a 20% increase in channel capacity for
Henry C. Hammer, Ravitej Uppu
wiley +1 more source
Novel applications of the NASA/GSFC Viterbi decoder hardware simulator [PDF]
, 1985 The NASA/GSFC developed an all digital, real time, programmable Viterbi decoder simulator operating at rates up to 6 Msps. With this simulator, the bit error rate (BER) performance of convolutionally encoded/Viterbi decoded Shuttle-TDRSS return link ...
Herr, D. W. +3 more
core +1 more source
Advanced Photonics Research, EarlyView.Optical wireless communications (OWCs) provide a promising alternative to spectrum‐congested microwave wireless communications. Recently, the use of metasurfaces with sub‐wavelength features for dynamic beam steering, beam manipulation, and spatial or optical‐angular‐momentum mode generation, conversion, and multiplexing in OWCs is proposed and ...
Ke Wang +7 more
wiley +1 more source