Results 1 to 10 of about 15,191 (160)

Development of New Spectral Amplitude Coding OCDMA Code by Using Polarization Encoding Technique

open access: yesApplied Sciences, 2023
OCDMA is an optical access technology that has a lot of potential because it can be asynchronously accessed and provides a higher level of security. The authors presented a new DW family code, a flexible double weight (FDW) code, and a novel polarization
Syed Mohammad Ammar   +6 more
doaj   +3 more sources

Complimentary code keying of spectral amplitude coding signals in optical buffering with increased capacity [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2020
Signal buffering services such as contention resolution and congestion avoidance are essential in optical packet switching networks. In this paper, an optical memory scheme based on spectral amplitude coding (SAC) and complementary code keying (CCK) is ...
Kai-Sheng Chen, Wien Hong
doaj   +2 more sources

Packet Switching Strategy and Node Architecture of Extended Spectral-Amplitude-Coding Labels in GMPLS Networks [PDF]

open access: yesApplied Sciences, 2019
We present packet switching applications based on extended spectral-amplitude-coding (SAC) labels in generalized multi-protocol label switching (GMPLS) networks.
Kai-Sheng Chen
doaj   +2 more sources

Differential Service in a Bidirectional Radio-over-Fiber System over a Spectral-Amplitude-Coding OCDMA Network

open access: yesPhotonics, 2016
A new scheme of radio-over-fiber (RoF) network based on spectral-amplitude-coding (SAC) optical code division multiple access (OCDMA) is herein proposed.
Chao-Chin Yang   +3 more
doaj   +3 more sources

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

open access: yesTongxin 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   +3 more
doaj   +3 more sources

SPECTRAL AMPLITUDE CODING OCDMA SYSTEMS USING ENHANCED DOUBLE WEIGHT CODE [PDF]

open access: yesJournal of Engineering Science and Technology, 2006
A new code structure for spectral amplitude coding optical code division multiple access systems based on double weight (DW) code families is proposed. The DW has a fixed weight of two.
F.N. HASOON, M.K. ABDULLAH, S. SHAARI
doaj   +1 more source

Variable weight spectral amplitude coding for multiservice OCDMA networks [PDF]

open access: yesOptical Fiber Technology, 2017
The emergence of heterogeneous applications such as internet data, video streaming, and online gaming, brings in a demand for a network environ- ments with capability of supporting diverse Quality of Services (QoS). Prioritizing the services is essential to ensure the delivery of information is at their best.
Saleh Seyedzadeh   +2 more
exaly   +5 more sources

Injection Coding With Spectral Shaping Capability

open access: yesIEEE Access, 2021
In digital transmission systems that involve pulse amplitude modulation (PAM), channel coding is useful for spectral shaping by concentrating the frequency energy of the transmitted information towards a predetermined range of the frequency spectrum, or ...
Opeyemi O. Ogunyanda   +2 more
doaj   +1 more source

PAPR Reduction of OFDM Signals Using Clipping and Coding

open access: yesJournal of Engineering, 2023
The problem of the high peak to average ratio (PAPR) in OFDM signals is investigated with a brief presentation of the various methods used to reduce the PAPR with special attention to the clipping method. An alternative approach of clipping is presented,
Mohammed Kasim Al-Haddad
doaj   +1 more source

Multivoxel codes for representing and integrating acoustic features in human cortex

open access: yesNeuroImage, 2020
Using fMRI and multivariate pattern analysis, we determined whether spectral and temporal acoustic features are represented by independent or integrated multivoxel codes in human cortex. Listeners heard band-pass noise varying in frequency (spectral) and
Ediz Sohoglu   +3 more
doaj   +1 more source

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