Results 31 to 40 of about 20,301,119 (276)

A grating-based OCDMA coding:decoding system incorporating a nonlinear optical loop mirror for improved code recognition and noise reduction

open access: yes, 2002
We demonstrate an elementary grating-based optical code division multiple access (OCDMA) code generation and recognition system incorporating a nonlinear optical loop mirror (NOLM) within the receiver.
Teh, P.C.   +4 more
core   +1 more source

Application of Semiconductor Optical Amplifier (SOA) in Managing Chirp of Optical Code Division Multiple Access (OCDMA) Code Carriers in Temperature Affected Fibre Link

open access: yesApplied Sciences, 2018
Chromatic and temperature induced dispersion can both severely affect incoherent high data rate communications in optical fibre. This is certainly also true for incoherent optical code division multiple access (OCDMA) systems with multi-wavelength ...
Md Shakil Ahmed, Ivan Glesk
doaj   +1 more source

WON-OCDMA System Based on MW-ZCC Codes for Applications in Optical Wireless Sensor Networks

open access: yesSensors, 2021
The growing demand for extensive and reliable structural health monitoring resulted in the development of advanced optical sensing systems (OSS) that in conjunction with wireless optical networks (WON) are capable of extending the reach of optical ...
Saleh Seyedzadeh   +4 more
doaj   +1 more source

Performance evaluation of coherent optical code division multiple access

open access: yesElectronics Letters, 1991
A coherent optical CDMA network employing Gold sequences for the spreading and despreading operations is analysed in terms of the signal to noise ratio penalty as a function of the number of simultaneous users incurred to maintain a given value of the bit error rate. The binary PSK and OOK modulation schemes are considered.
SERGIO BENEDETTO, OLMO, Gabriella
openaire   +2 more sources

Comparative Evaluation of Hemodiafiltration, Hemoperfusion, and Standard Hemodialysis on Efficacy, Inflammatory Control, Dialysis Adequacy, and Safety in End‐Stage Renal Disease: A Prospective Observational Study

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo   +5 more
wiley   +1 more source

Applications of perfect difference codes in fiber-optics and wireless optical code-division multiplexing/multiple-access systems [PDF]

open access: yes, 2012
After establishing itself in the radio domain, Spread spectrum code-division multiplexing/multiple-access (CDMA) has seen a recent upsurge in optical domain as well.
Umrani, Fahim Aziz
core  

Variable Spreading Factor Codes for Multirate Optical Code Division Multiple Access

open access: yesIEEE Access
This paper presents variable spreading factor codes for a synchronous optical code division multiple access utilizing generalized modified prime sequence codes.
Kyohei Ono   +3 more
doaj   +1 more source

Simulation realization of 2-D wavelength/time system utilizing MDW code for OCDMA system

open access: yesEPJ Web of Conferences, 2017
This paper presents a realization of Wavelength/Time (W/T) Two-Dimensional Modified Double Weight (2-D MDW) code for Optical Code Division Multiple Access (OCDMA) system based on Spectral Amplitude Coding (SAC) approach.
Azura M. S. A.   +4 more
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge   +6 more
wiley   +1 more source

Cardinality enhancement utilizing Sequential Algorithm (SeQ) code in OCDMA system

open access: yesEPJ Web of Conferences, 2017
Optical Code Division Multiple Access (OCDMA) has been important with increasing demand for high capacity and speed for communication in optical networks because of OCDMA technique high efficiency that can be achieved, hence fibre bandwidth is fully used.
Fazlina C. A. S.   +3 more
doaj   +1 more source

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