Results 11 to 20 of about 2,266,545 (303)

Pilot-Assisted Phase Recovery in Coherent Optical Receivers with Robust Locally Weighted Interpolation

open access: yesPhotonics
Accurate and low-complexity phase estimation is crucial for optimal data recovery in coherent optical receivers, especially for applications in emerging scenarios such as low-margin optical networks, green networks, probabilistic-shaping modulation, the ...
Carlos Carrión Betancourt   +4 more
doaj   +2 more sources

MIMO MC-CDMA Systems over indoor optical wireless communication channels [PDF]

open access: yes, 2011
Optical wireless communication systems offer a number of advantages over their radio frequency counterparts. The advantages include freedom from fading, freedom from spectrum regulations and abundant bandwidth.
Alsaadi, Fuad Eid S
core   +6 more sources

Homodyne coherent detection of ASK and PSK signals performed by a subcarrier optical phase-locked loop [PDF]

open access: yes, 2005
Optical transmission systems based on homodyne coherent detection of 2-ASK and pilot carrier 2-PSK signals have been implemented. ASK data has been transmitted at 2.5 Gbps, while 2.5 Gbps and 10 Gbps PSK systems have been tested.
S. Camatel   +4 more
core   +2 more sources

High Q-factor Fabry-Perot Microresonator as an Alternative to Microdisk in Electro-Optical Modulator for Microwave-Photonic Receivers

open access: yesJournal 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

A genetic algorithm method for optical wireless channel control [PDF]

open access: yes, 2009
A genetic algorithm controlled multispot transmitter is proposed as an alternative approach to optimizing the power distribution for single element receivers in fully diffuse mobile indoor optical wireless communication systems. By specifically tailoring
Leeson, Mark S.   +2 more
core   +1 more source

Organic photovoltaics for simultaneous energy harvesting and high-speed MIMO optical wireless communications

open access: yesLight: Science & Applications, 2021
We show that organic photovoltaics (OPVs) are suitable for high-speed optical wireless data receivers that can also harvest power. In addition, these OPVs are of particular interest for indoor applications, as their bandgap is larger than that of silicon,
Iman Tavakkolnia   +7 more
doaj   +1 more source

Optical wireless communications utilizing a dicode PPM PIN-BJT receiver [PDF]

open access: yes, 2005
Original results are presented for an optical wireless system employing dicode pulse position modulation (DiPPM) and a PIN-BJT receiver. When operating at and a bit rate of 10 Mb/s a sensitivity of –51 dBm (Pe=10-9) is achieved and this represents a ...
Cryan, R.A., Menon, M.
core   +1 more source

Quantum Receivers for Entanglement Assisted Classical Optical Communications

open access: yesIEEE Photonics Journal, 2021
Entanglement assisted (EA) communication represents an interesting alternative to classical communication, in particular in low-brightness and highly noisy regime when it outperforms significantly corresponding classical counterpart in terms of the ...
Ivan Djordjevic
doaj   +1 more source

Multi-user indoor optical wireless communication system channel control using a genetic algorithm [PDF]

open access: yes, 2011
A genetic algorithm controlled multispot transmitter is demonstrated that is capable of optimising the received power distribution for randomly aligned single element receivers in multiple fully diffuse optical wireless communications systems with ...
M.S. Leeson   +7 more
core   +1 more source

High-End Silicon PDICs [PDF]

open access: yesAdvances in Radio Science, 2008
An overview on integrated silicon photodiodes and photodiode integrated circuits (PDICs) or optoelectronic integrated circuits (OEICs) for optical storage systems (OSS) and fiber receivers is given.
H. Zimmermann
doaj  

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