Modelling of radio monitoring system of short-wave radio communication adaptive systems [PDF]
Системный анализ и прикладная информатика, 2019 The structure of model which allows to spend an estimation of system functioning efficiency of radio monitoring system of short-wave radio communication adaptive systems in adverse conditions of influence of external jams is described.
B. A. Liakh +2 more
doaj +2 more sources
Full duplex 60 GHz millimeter wave transmission over multi-mode fiber [PDF]
, 2010 Copyright @ 2010 IEEENew wireless subscribers are signing up at an increasing demand of more capacity for ultra-high data rate transfers at speeds more than 1 Gbps, while the radio spectrum is limited. Millimeter wave communication system offers a unique
M. Kamarei +9 more
core +1 more source
Baseband Radio over Fiber Aided Millimeter-Wave Distributed Antenna for Optical/Wireless Integration [PDF]
, 2013 A Baseband Radio Over Fiber (BROF) architecture is proposed, where upto four Radio Frequency (RF) carriers can be generated, while using the heterodyne photo-detection of only two optical signals. This proposed BROF architecture has a star-like structure
Salman Ghafoor +7 more
core +1 more source
Multilevel modulated signal transmission over serial single-mode and multimode fiber links using vertical-cavity surface-emitting lasers for millimeter-wave wireless communications [PDF]
, 2007 Quadrature phase-shift keying, 16 quadrature amplitude modulation (QAM), and 64-QAM data transmission-Worldwide Interoperability for Microwave Access modulation schemes-at 6 and 20 MS/s is demonstrated for a link that emulates a cost-effective 1.55-m ...
Shen, Pengbo +3 more
core +1 more source
Multi-frequency HF radar measurements of artificial F-region field-aligned irregularities [PDF]
, 2004 International audienceWe present radar backscatter power measurements using the CUTLASS HF radar at Hankasalmi, Finland from F-region field-aligned irregularities induced by HF radio pumping with the EISCAT Heating facility.
A. Senior +15 more
core +1 more source
Indoor Pico-Cellular Network Operation based on a Simple Optical Millimetre-Wave Generation Scheme [PDF]
, 2010 Experimental demonstrations of modulated signal transmission and pico-cellular network operation at millimeter-wave frequencies, which are based on a simple technique for millimeter-wave generation using an optical phase modulator and optical filtering ...
Jeanne James +14 more
core +1 more source
Uneasy allies: community radio and communication for social change [PDF]
, 2022 Community radio has long had associations with communication for social change. However, the two are often linked indiscriminately, with little regard for their very different and complex theoretical and historical positions.
Backhaus, Bridget, Tacchi, Jo
core +1 more source
Dynamics of Alfvén waves in the night-side ionospheric Alfvén resonator at mid-latitudes [PDF]
Annales Geophysicae, 2005 A numerical solution of the problem on dynamics of shear-mode Alfvén waves in the ionospheric Alfvén resonator (IAR) region at middle latitudes at nighttime is presented for a case when a source emits a single pulse of duration τ into ...
V. V. Alpatov +4 more
doaj +1 more source
Effect of Some Meteorological Variables and Conditions on Mobile Phone and 'TV' Satellite Signal
Al-Mustansiriyah Journal of Science, 2021 The study aimed to seek for the effect of meteorological parameters and conditions on wave transport for both radio wave band that used by mobile phone communication and microwave band that used in 'TV' satellites by showing which atmospheric variable ...
Hussain Abodi Nemah +3 more
doaj +1 more source
Nonlinearity and Noise Effects in Multi-level Signal Millimeter-Wave over Fiber Transmission using Single- and Dual-Wavelength Modulation [PDF]
, 2010 We transmit multilevel quadrature amplitude modulation (QAM) data-IEEE 802.16 schemes-at 20 MSps and an orthogonal frequency-division multiplexing (OFDM) 802.11 g signal (54 Mbps) with a 25 GHz millimeter-wave over fiber system, which employs a dual ...
Jeanne James +9 more
core +1 more source