Results 71 to 80 of about 2,557 (191)

基于二维编/解码器的非相干OCDMA系统研究

Guangtongxin yanjiu, 2018
为提高非相干光码分多址（OCDMA）系统的安全性和光纤带宽利用率,采用p=5的素数码/素数码作为二维地址码设计了二维光编/解码器,并在OptiSystem软件中搭建了二维非相干OCDMA系统。仿真结果表明,二维非相干OCDMA系统能够实现信号传输。当存在多用户时,系统产生多址干扰（MAI）,会恶化系统性能。仿真分析表明,在二维非相干OCDMA系统接收端引入光硬限幅器,可以有效抑制MAI,提高系统性能。
洪媛, 徐宁
doaj  

Throughput Performance Evaluation of Multiservice Multirate OCDMA in Flexible Networks

IEEE Photonics Journal, 2016
In this paper, new analytical formalisms to evaluate the packet throughput of multiservice multirate slotted ALOHA optical code-division multiple-access (OCDMA) networks are proposed.
Thiago R. Raddo, Anderson L. Sanches, Idelfonso Tafur Monroy, Ben-Hur V. Borges   +3 more
doaj   +1 more source

Performance Analysis of DPSK-OCDMA System for Optical Access Network

, 2016
In this research, the performance of optical code division multiple access (OCDMA) using differential phase shift keying (DPSK) has been compared with OCDMA On-Off Keying (OOK).
Islam, Monirul, Ali, Sharafat, Ahmed, N., Sayeed, Shohel, Aljunid, S. A., Sabri, Naseer   +5 more
core   +1 more source

Application and Analysis of Performance of DQPSK Advanced Modulation Format in Spectral Amplitude Coding OCDMA [PDF]

Mehran University Research Journal of Engineering and Technology, 2014
SAC (Spectral Amplitude Coding) is a technique of OCDMA (Optical Code Division Multiple Access) to encode and decode data bits by utilizing spectral components of the broadband source.
Abdul Latif Memon, Khuda Bux Amur, Muhammad Imran Mallik   +2 more
doaj  

Information Leakage Rate of Optical Code Division Multiple Access Network Using Wiretap Code. [PDF]

Entropy (Basel), 2023
Xu R, Sun L, Ji J, Wang K, Song Y.
europepmc   +1 more source

Performance and design of OCDMA spectral-amplitude-coding with optical orthogonal codes

Tongxin xuebao, 2003
The scheme of FBGs-based OCDMA spectral-amplitude-coding（SAC） for OCDMA system with optical orthogonal code is discussed; The designing and the achievement process of SAC encoder/decoder with)1,1,1（）,,(2+++=qqqwNlare firstly submitted; The performance of
LI Chuan-qi, SUN Xiao-han, ZHANG Ming-de, DING Dong   +3 more
doaj   +2 more sources

Advancing High-Speed Transmissions over OCDMA Networks by Employing an Intelligently Structured Receiver for Noise Mitigation

Applied Sciences, 2018
We propose an intelligently structured receiver to achieve high-speed transmissions over optical code-division multiple access (OCDMA) networks. Employing spectral-amplitude coding (SAC) reduces multiuser interference (MUI) in OCDMA, but the network bit ...
Kai-Sheng Chen, Yi-Chang Chen, Long-Guang Liao   +2 more
doaj   +1 more source

Addressing Multi-User Interference in Vehicular Visible Light Communications: A Brief Survey and an Evaluation of Optical CDMA MAC Utilization in a Multi-Lane Scenario. [PDF]

Sensors (Basel), 2023
Plascencia E, Guan H, Chassagne L, Căilean AM, Barrois O, Shagdar O.   +5 more
europepmc   +1 more source

Performance of SAC OCDMA-FSO communication systems [PDF]

, 2013
In this paper, the performance of free space optical (FSO) communication system employing the spectral amplitude coding optical code division multiple access (SAC OCDMA) technique is presented.
Ahmad Anas, Siti Barirah, Sahbudin, Ratna Kalos Zakiah, Hitam, Salasiah, Kamarulzaman, Mazlin, Mokhtar, Makhfudzah   +4 more
core   +1 more source

Beyond 5G Fronthaul Based on FSO Using Spread Spectrum Codes and Graphene Modulators. [PDF]

Sensors (Basel), 2023
Neves D, Sanches A, Nobrega R, Mrabet H, Dayoub I, Ohno K, Haxha S, Glesk I, Jurado-Navas A, Raddo T.   +9 more
europepmc   +1 more source