scholarly journals Flexible Topology Migration in Optical Cross Add and Drop Multiplexer in Metropolitan Ring Network

2012 ◽  
Vol 8 (4) ◽  
pp. 474-481
Author(s):  
Roula
Keyword(s):  
Ring Network ◽  
Add And Drop Multiplexer

OXADM dalam Sistem Keselamatan Rangkaian Cincin Metropolitan

2012 ◽  
Author(s):  
Mohammad Syuhaimi Ab–Rahman ◽  
Seri Mastura Mustaza ◽  
Mohd Saiful Dzulkefly Zan ◽  
Aida Baharudin
Keyword(s):  
Optical Network ◽  
Ring Network ◽  
Protection Scheme ◽  
Safe Area ◽  
Pass Through ◽  
Ring Protection ◽  
Ring Architecture ◽  
Cross Connect ◽  
Optical Ring ◽  
Add And Drop Multiplexer

Pemultipleks Tambah Gugur Silang Optik (OXADM) merupakan satu peranti optik hibrid baru yang dihasilkan melalui gabungan dua peranti asal, iaitu Pemultipleks Tambah Gugur Optik (OADM) dan Sambung Silang Optik (OXC). Ianya telah dibangunkan berdasarkan kajian terhadap kelemahan peranti sedia ada dengan beberapa ciri baru dan menarik telah dimasukkan. OXADM diperkenalkan untuk meningkatkan tahap keselamatan dalam rangkaian cincin. Dengan adanya ciri ‘Pengumpulan’ membolehkan perlindungan multipleks diaktifkan di mana kesemua isyarat yang melalui nod optik akan dikumpulkan di atas satu talian perlindungan/persediaan sekiranya berlaku kerosakan pada talian bekerja dalam rangkaian optik cincin. Antara skema perlindungan lain yang diperkenalkan oleh OXADM ini adalah perlindungan linear dan perlindungan cincin. OXADM membenarkan isyarat membuat pusingan secara ‘U’ secara dalaman untuk mengkuarantinkan kawasan kerosakan daripada kawasan yang selamat. Kedua–dua ciri inilah yang membezakan OXADM dengan peranti–peranti sebelumnya. Dengan adanya peranti OXADM ini membolehkan sebarang kerosakan yang berlaku dalam rangkaian optik dapat dipulihkan segera dengan mengaktifkan skema perlindungan yang sesuai berdasarkan jenis dan lokasi kerosakan yang berlaku. OXADM ini merupakan peranti pertama yang mengintegrasikan ketiga–tiga jenis mekanisme keselamatan rangkaian di dalam satu peranti. Kata kunci: OXADM; skema keselamatan; rangkaian cincin; simulasi, perkakasan The Optical Cross Add & Drop Multiplexer (OXADM) is a new hybrid optical device which has the combination of the original Optical Add And Drop Multiplexer (OADM) and Optical Cross Connect (OXC) devices. OXADM is developed based on the study on the demerits of the existing devices and new features are added to the device. OXADM is introduced to increase the survivability in ring architecture network. With its ‘Accumulation’ feature enable the multiplexing protection scheme can be activated where all the signals pass through an optical node are multiplexed onto a single path as a protection/preparation in case breakdown happens at the working line in an optical ring network. Other protection schemes provided by OXADM are the Linear Protection and Ring Protection. OXADM enable the signal to route internally as U turn to segment the breakdown area from the safe area. Both features have differentiated the OXADM with the previous existing device. With this new OXADM device, any breakdown happens in an optical network can be quickly fixed by activating the appropriate protection scheme based on the type and the location of the breakdown. OXADM device is known as the first device that integrates all three network safety mechanisms onto a single device. Key words: OXADM; protection scheme; ring network; simulation; hardware

Optical Cross Add and Drop Multiplexer (OXADM) in CWDM Ring Network

2007 ◽  
Vol 28 (3) ◽  
Author(s):  
Mohammad Syuhaimi Ab-Rahman ◽  
Abang Annuar Ehsan ◽  
Hayati Hussin ◽  
Muhammad Faiz Bukhori ◽  
Sahbudin Shaari
Keyword(s):  
Ring Network ◽  
Add And Drop Multiplexer

Efficient Routing of Star–Ring Hybrid Topology with Optical Add and Drop Multiplexer in DWDM System

2016 ◽  
Vol 37 (4) ◽  
Author(s):  
Anju Bala ◽  
Sanjeev Dewra
Keyword(s):  
Wavelength Division Multiplexing ◽  
Signal To Noise Ratio ◽  
Optical Signal ◽  
Wavelength Routing ◽  
Ring Network ◽  
Channel Spacing ◽  
Wavelength Division ◽  
Hybrid Topology ◽  
Dwdm System ◽  
Add And Drop Multiplexer

AbstractThis paper investigates the performance of star–ring hybrid topology networks with optical add and drop multiplexer (OADM) in dense wavelength division multiplexing (DWDM) system with 0.8 nm channel spacing at different bit rates (5, 10 and 15 Gbps) in terms of bit error rate (BER), quality factor and optical signal-to-noise ratio (OSNR). OADM has the capability to add and drop the new channels and provides the wavelength routing between star and ring topologies. It is observed that the hybrid topology supports 128 users on upper and lower ends with 150 km distance between the nodes of ring network without dispersion compensating fiber.

Flexible Topology Migration in Optical Cross Add and Drop Multiplexer Metropolitan Ring Network: The Next Proposal

2011 ◽  
Vol 10 (6) ◽  
pp. 1258-1263 ◽  
Author(s):  
Mohammad Syuhaimi Ab-Rahman ◽  
Aswir Premadi ◽  
Hamimi Fadziati ◽  
Sahbudin Shaari
Keyword(s):  
Ring Network ◽  
Add And Drop Multiplexer

scholarly journals Heuristic rank selection with progressively searching tensor ring network

2021 ◽  
Author(s):  
Nannan Li ◽  
Yu Pan ◽  
Yaran Chen ◽  
Zixiang Ding ◽  
Dongbin Zhao ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Compression Ratio ◽  
State Of The Art ◽  
Heuristic Method ◽  
Ring Networks ◽  
Ring Network ◽  
Narrow Region ◽  
Network Search ◽  
Deep Networks ◽  
Evolutionary Phase

AbstractRecently, tensor ring networks (TRNs) have been applied in deep networks, achieving remarkable successes in compression ratio and accuracy. Although highly related to the performance of TRNs, rank selection is seldom studied in previous works and usually set to equal in experiments. Meanwhile, there is not any heuristic method to choose the rank, and an enumerating way to find appropriate rank is extremely time-consuming. Interestingly, we discover that part of the rank elements is sensitive and usually aggregate in a narrow region, namely an interest region. Therefore, based on the above phenomenon, we propose a novel progressive genetic algorithm named progressively searching tensor ring network search (PSTRN), which has the ability to find optimal rank precisely and efficiently. Through the evolutionary phase and progressive phase, PSTRN can converge to the interest region quickly and harvest good performance. Experimental results show that PSTRN can significantly reduce the complexity of seeking rank, compared with the enumerating method. Furthermore, our method is validated on public benchmarks like MNIST, CIFAR10/100, UCF11 and HMDB51, achieving the state-of-the-art performance.

A Optimization Traffic Grooming Algorithm Based on Bidirectional SONET Ring Topology Network

2015 ◽  
Vol 727-728 ◽  
pp. 996-999 ◽  
Author(s):  
Su Xia Cui
Keyword(s):  
Resource Utilization ◽  
Network Performance ◽  
Minimum Weight ◽  
Routing Algorithm ◽  
Traffic Grooming ◽  
Network Routing ◽  
Ring Network ◽  
Network Resource ◽  
Blocking Rate ◽  
The Impact

The issue of WDM network traffic grooming has been a hot in the field of research. The implementation of traffic grooming technology can improve the utilization of wavelength channels, reducing the link delay and the blocking rate of the network, which to improve network resource utilization and optimize network performance. This article mainly studies all-optical network routing algorithm utilizing WDM technology to achieve the dynamic traffic grooming and propose a optimization grooming policy -HaffmanGroom (M) algorithms which based on SONET / WDM ring network. The most important feature of this algorithm is that the SONET / WDM ring network of multiple multicast request packet , with a minimum weight of the light path priority selection method, the flow of requests each group effectively optimize ease . The algorithm takes into account the impact of the link request factor and link hops to optimize the link selection. The simulation results show that under the conditions of factors and the number of hop a request fully consider the impact of these two factors to the link, and can achieve optimal link with the smallest weights for effective data transmission, improving resource utilization, reducing blocking rate in order to achieve the purpose of optimizing network performance.

Sign in / Sign up

Export Citation Format

Share Document