Results 91 to 100 of about 2,608 (229)

All-optical modulation format conversion from NRZ-OOK to PSK-Manchester using SOA-MZI

open access: yes, 2012
Proposed and demonstrated is an all-optical modulation format conversion from a non-return-to-zero on-off keying (NRZ-OOK) signal to a phase-shift keying (PSK)-Manchester format signal using a semiconductor optical amplifier based Mach-Zehnder ...
Wang, Xu, Dai, Bo, Wada, N., Shimizu, S.
core   +1 more source

Signalementen 2012/6

open access: yesTijdschrift voor Gerontologie en Geriatrie, 2013
proefschriften Apathie bij Alzheimer en Parkinson vooral ook kwelling voor de mantelzorger Rosa Drijgers. Apathy in Alzheimer’ and Parkinson’s disease.Assessment, pathophysiology and treatment, Universiteit Maastricht, 11 oktober 2012,139 p, ISBN ...
- Redactiebureau
doaj   +1 more source

BER Performance of NRZ-OOK and Manchester Modulation in Indoor Wireless Infrared Links

open access: yesInternational Journal of Wireless Information Networks, 1998
This paper describes a novel approach to theevaluation of the bit error rate (BER) performance ofoptical wireless links that takes into account shotnoise, fluorescent light interference, and intersymbol interference (ISI) from both multipathdispersion and high-pass filtering (HPF) at thereceiver. The calculation of the BER is achieved withthe use of an
Samaras, K   +3 more
openaire   +2 more sources

Experimental Characterisation and Modelling of Atmospheric Fog and Turbulence in FSO

open access: yes, 2013
Free space optical (FSO) communication uses visible or infrared (IR) wavelengths to broadcast high-speed data wirelessly through the atmospheric channel.
Ijaz, Muhammad
core  

A study of discrete wavelet transform based denoising to reduce the effect of artificial light interferences for indoor optical wireless communication

open access: yes, 2010
The optical power penalty (OPP) due to the artificial light interferences (ALIs) can be significantly high in an indoor optical wireless communication (OWC) channel making such link practically infeasible.
Ghassemlooy, Zabih   +5 more
core   +1 more source

Multi-pulse Fourier codes for bit transmission at the quantum limit

open access: yesNew Journal of Physics
Bit-transmission can be enhanced by the use of quantum detection techniques, realizing a joint-detection receiver (JDR) that is able to decode transmitted signals via a collective operation and achieve the Holevo channel capacity.
Matteo Rosati
doaj   +1 more source

Slow-Slope Reset Scheme for Highly-Sensitive CMOS Integrate-and-Dump Receiver OEIC

open access: yesIEEE Access
This paper presents a slow-slope reset scheme that reduces charge injection for highly-sensitive integrate-and-dump direct detection receivers. The monolithic receiver OEIC utilizes a source-follower front-end and low-capacitance PIN photodiode, to ...
Simon Michael Laube   +3 more
doaj   +1 more source

10 Gb/s Polarization-Insensitive OOK-to-BPSK Modulation Format Conversion Using a Single SOA, and Its Performance in OOK/DBPSK Mixed-Modulation Format, Long-Haul DWDM Transmission

open access: yes, 2008
Polarization-insensitive modulation format conversion of 10 Gb/s return-to-zero (RZ) On-Off keying to binary phase-shift keying (BPSK) is achieved for the first time by transient cross-phase modulation (XPM) using a single semiconductor optical amplifier
Astar, William
core  

A 0dBm 10MBps 2.4GHz ultra-low power ASK/OOK transmitter with digital pulse-shaping

open access: yes, 2010
This paper presents an ultra-low power transmitter used for wireless sensor network (WSN) and wireless body area network (WBAN) applications. The proposed 2.4GHz direct modulation transmitter radiates 1mW with 3.88mW power consumption, and it supports ...
Groot, de, H.W.H.   +13 more
core   +1 more source

RZ-OOK to NRZ-OOK Modulation-Format Conversion in Microring Resonator for Mixed WDM Systems

open access: yes
Simultaneous 33% return to zero-on off keying (RZ-OOK) to non-return to zero (NRZ)-OOK and 50% RZ-OOK to NRZ-OOK modulation format conversions using a single ring microring resonator (MRR) in mixed wavelength division multiplexing (WDM) system are ...
Ozoliņš, Oskars   +2 more
core  

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