Results 71 to 80 of about 102,182 (133)

Performance comparison of indoor VLC system employing SAC-OCDMA technique [PDF]

, 2016
Performance comparison of indoor visible light communication (VLC) system with spectral amplitude coding-optical code division multiple access (SAC-OCDMA) techniques using Khazani-Syed (KS) code is examined.
S.B. Ahmad Anas, Ahmad Anas, Siti Barirah, Sahbudin, Ratna Kalos Zakiah, S. Hitam, Yahaya Idriss, R.K. Sahbudin, Idriss, Yahaya, Hitam, Salasiah   +7 more
core   +1 more source

一种新的光CDMA系统地址码的构造与分析

Guangtongxin yanjiu, 2007
基于对LSOOC码的修正,提出了一种光谱幅度编码光码分多址（SAC-OCDMA）地址码的设计方案。分析了码字特性,与Hardmard、MQC、MFH、BIBD（m=2）码做了比较,设计了可调谐光纤布拉格光栅（FBG）编解码器,阐述了编解码原理。分析结果表明,该码字容量大,编解码方法简单,在光源和信道理想条件下可以消除多址干扰。
丁涛, 陈长缨, 胡国永
doaj  

Utilizing States of Polarization in One-Dimensional Corite Codes with Two-Code Keying for Optical Code-Division Multiple Access

Photonics
We propose a novel family of codes comprising two mutually orthogonal states of polarization (SOPs) for the spectral encoding of one-dimensional (1D) Corite codes with two-code keying (TCK) for use in the spectral amplitude coding (SAC) of optical code ...
Bih-Chyun Yeh
doaj   +1 more source

Capacity Enhancement Based on Using Hybrid SCM With SAC-OCDMA Using Different Codes for OFC and FSO Transmission Systems

IEEE Access
A new hybrid optical fiber communication (OFC) and free space optics (FSO) communication systems are proposed for enhancing the transmission capacity.
Somia A. Abd El-Mottaleb, Hassan Yousif Ahmed, Medien Zeghid, Abu Sufian Abdallah Osman Hassan   +3 more
doaj   +1 more source

Multi-Dimensional Sigma Shift Matrix (nD-SSM) Code With Adaptable Transmitter-Receiver Architecture to Support Multiclass Users for SAC-OCDMA System

IEEE Access
This work introduces an n-D algorithm to generate multi-dimensional Sigma Shift Matrix (nD-SSM) code sequences is proposed, which is based on spectral/temporal/spatial incoherent optical code division multiple access (OCDMA) system.
Hassan Yousif Ahmed, Medien Zeghid, Maisara Mohyeldin Gasim, Somia A. Abd El-Mottaleb   +3 more
doaj   +1 more source

Bipolar Optical Code Division Multiple Access Techniques Using a Dual Electro-Optical Modulator Implemented in Free-Space Optics Communications. [PDF]

Sensors (Basel), 2020
Tseng SP, Wijanto E, Lai PH, Cheng HC.
europepmc   +1 more source

Design of graphical user interface for multiuser SAC-OCDMA performance analysis [PDF]

, 2015
The transmission of data by multiple users simultaneously using various multiple access techniques over fibre optic communication has been studied in several literatures.
H Abdlkarem, Najla., Chellathurai, Bumaran, RAMLI, NUR IRDINA   +2 more
core   +1 more source

DW-ZCC code based on SAC-OCDMA deploying multi-wavelength laser source for wireless optical networks [PDF]

, 2017
In this paper, double weight zero cross correlation (DW-ZCC) code is proposed for spectral amplitude coding optical code division multiple access (SAC OCDMA) system.
Glesk, Ivan, Anas, Siti Barirah Ahmad, Lakshminarayana, Gandham, Seyedzadeh, Saleh, Moghaddasi, Majid   +4 more
core   +2 more sources

Two-Dimensional Permutation Vectors' (PV) Code for Optical Code Division Multiple Access Systems. [PDF]

Entropy (Basel), 2020
Yousif Ahmed H, Zeghid M, A Imtiaz W, Sharma T, Chehri A, Fortier P.   +5 more
europepmc   +1 more source

Performance analysis of different detection techniques in SAC-OCDMA systems

, 2014
Optical Code Division Multiple Access (OCDMA) system is a perfect choice for satisfying high communication demand because of the all-optical processing, simplified network control, bandwidth efficiency and security of such system.
Norazimah, Mat Zain
core