Results 31 to 40 of about 2,557 (191)
Design and Analysis of Self‐Healing Tree‐Based Hybrid Spectral Amplitude Coding OCDMA System
Security and Communication Networks, Volume 2017, Issue 1, 2017., 2017 This paper presents an efficient tree‐based hybrid spectral amplitude coding optical code division multiple access (SAC‐OCDMA) system that is able to provide high capacity transmission along with fault detection and restoration throughout the passive optical network (PON).
Waqas A. Imtiaz +6 more
wiley +1 more source
Design and Investigation of 10 Gb/s FSO Wiretap Channel Using OCDMA Time-Diversity Reception
IEEE Photonics Journal, 2020 In this paper, 10 Gb/s free space optical (FSO) wiretap channel using optical code division multiple access (OCDMA) time-diversity reception is designed and demonstrated for the first time.
Jianhua Ji +4 more
doaj +1 more source
Modified Three‐Dimensional Multicarrier Optical Prime Codes
International Journal of Optics, Volume 2016, Issue 1, 2016., 2016 We propose a mathematical model for novel three‐dimensional multicarrier optical codes in terms of wavelength/time/space based on the prime sequence algorithm. The proposed model has been extensively simulated on MATLAB for prime numbers (P) to analyze the performance of code in terms of autocorrelation and cross‐correlation.
Rajesh Yadav +2 more
wiley +1 more source
Flexible Variable Weight Zero Cross-Correlation (FVWZCC) investigations for multimedia applications
Vojnotehnički GlasnikIntroduction/purpose: In this paper, we propose a novel code construction method with the zero cross-correlation property, the Flexible Variable Weight Zero Cross-Correlation (FVWZCC).
Abdellah Bensaad +2 more
doaj +1 more source
Noncoherent Spectral Optical CDMA System Using 1D Active Weight Two‐Code Keying Codes
Mathematical Problems in Engineering, Volume 2016, Issue 1, 2016., 2016 We propose a new family of one‐dimensional (1D) active weight two‐code keying (TCK) in spectral amplitude coding (SAC) optical code division multiple access (OCDMA) networks. We use encoding and decoding transfer functions to operate the 1D active weight TCK. The proposed structure includes an optical line terminal (OLT) and optical network units (ONUs)
Bih-Chyun Yeh, Antonino Laudani
wiley +1 more source
IET Networks, Volume 15, Issue 1, January/December 2026.This work investigates suitable MAC protocols for medical optical wireless body‐area networks (WBANs), focussing on multiple access management. Using realistic channel models, we evaluate the network performance in terms of energy efficiency, quality‐of‐service and scalability for different IEEE protocols, for both intra‐ and extra‐WBAN connectivity in
Christos Giachoudis +5 more
wiley +1 more source
Cyclic code‐shift extension keying for multi‐user optical wireless communications
Electronics Letters, Volume 51, Issue 11, Page 847-849, May 2015., 2015 An optical code‐division multiple access (OCDMA) scheme based on cyclic shift extension of a base code is proposed to enable asynchronous multi‐user optical wireless communications for very populated scenarios. This multiple access method is convenient for low–medium data rate communications of a large number of simultaneous transmitters. An expression
O. González +4 more
wiley +1 more source
, 2009 This thesis documents my work in the telecommunication system laboratory at the Optoelectronics Research Centre, towards the implementation of code reconfigurable OCDMA and all-optical packet switching nodes based on fibre Bragg grating (FBG) technology.
Tian, Chun
core +2 more sources
Alexandria Engineering Journal, 2023 For capacity enhancement of free space optics (FSO) communication, a new model based on using four Laguerre-Gaussian (LG) beams, each carries four different users use optical code division multiplexing (OCDMA) techniques, is proposed.
Somia A. Abd El-Mottaleb +7 more
doaj +1 more source
OCDMA platform for avionics applications
Electronics Letters, 2006 A scalable OCDMA platform for testing different avionics applications at Lockheed Martin has been designed and built.
Glesk, I. +3 more
openaire +3 more sources