Results 21 to 30 of about 20,276,485 (162)
Effects of Modulation Techniques (Manchester Code, NRZ or RZ) on the Operation of Hybrid WDM/TDM Passive Optical Networks. [PDF]
Int Sch Res Notices, 2014 In this paper, the performance and feasibility of a hybrid wavelength division multiplexing/time division multiplexing passive optical network (WDM/TDM PON) system with 128 optical network units (ONUs) is analysed. In this system, triple play services (video, voice and data) are successfully communicated through a distance of up to 28 km.
Nyachionjeka K, Makondo W.
europepmc +2 more sources
Applied Sciences, 2020 The purpose of this article is to propose a new configuration based on OCDMA and Fast-OFDM techniques for access network applications. A hybrid intensity modulation with direct detection, fast orthogonal frequency-division multiplexing–code division ...
Hichem Mrabet
doaj +1 more source
Improving multi access interference suppression in optical CDMA by using all-optical signal processing [PDF]
, 2013 This paper presents the study of a novel alloptical method for processing optical CDMA signals towards improving suppression of multi access interference.
Glesk, Ivan +5 more
core +4 more sources
Chaotic Spread Spectrum Technology for Optical Code Division Multiple Access Passive Optical Network
Guangtongxin yanjiu, 2021 Aiming at the problem of capacity in Wavelength Division Multiplexing-Passive Optical Network (WDM-PON), Optical Code Division Multiple Access WDM-PON (OCDMA-WDM-PON) based on chaotic spread spectrum is proposed to expand the capacity and rate, ensuring ...
Li-wei YANG +4 more
doaj +1 more source
Photonics, 2019 Supporting multi-rate transmission is an essential factor in current optical packet switching (OPS) networks. In this paper, the author studied a multi-rate scheme capable of forwarding packets with different signal rates based on label switching.
Kai-Sheng Chen
doaj +1 more source
Optical steganography of code-shift-keying OCDMA signal based on incoherent light source
IEEE Photonics Journal, 2015 A method to enhance the security of the optical stealth channel is proposed. The proposed method uses the techniques of polarization modulator based code-shift-keying (CSK) data modulation and optical code-division multiple-access (OCDMA) en/decoding ...
Huatao Zhu +6 more
doaj +1 more source
Design configuration of encoder and decoder modules for modified double weight (MDW) code spectral amplitude coding (SAC) optical code division multiple access (OCDMA) based on fiber bragg gratings [PDF]
Proceedings of CAOL 2005. Second International Conference on Advanced Optoelectronics and Lasers, 2005., 2006 In this work, we are proposing the serial and parallel configurations of encoder and decoder modules to encode and decode a new developed spectral amplitude coding (SAC) known as modified double weight (MDW) code for optical code division multiple access (OCDMA) system.
Z. Zan +4 more
openaire +1 more source
Engineering Reports, Volume 2, Issue 6, June 2020., 2020 In this article, we consider the utility resource allocation with the goal of maximizing the throughput and achieving fairness among the multiple competing sessions in the network. Specifically, we propose and formulate a single‐objective nonlinearly constrained programming problem with delay and capacity constraints.
Ridhima Mehta
wiley +1 more source
Indoor Visible Light Communication: A Tutorial and Survey
Wireless Communications and Mobile Computing, Volume 2020, Issue 1, 2020., 2020 With the advancement of solid‐state devices for lighting, illumination is on the verge of being completely restructured. This revolution comes with numerous advantages and viable opportunities that can transform the world of wireless communications for the better.
Galefang Allycan Mapunda +6 more
wiley +1 more source
A 16-channel reconfigurable OCDMA/DWDM system using continuous phase-shift SSFBGs [PDF]
, 2007 We demonstrate a reconfigurable 16-channel optical code-division multiple access (OCDMA)/dense wavelength division multiplexing (DWDM) system (4 OCDMA times 4 DWDM times 625 Mb/s) based on novel 31-chip, 40 Gchip/s quaternary phase coding gratings ...
Ibsen, M. +4 more
core +1 more source