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  Subjects -> ELECTRONICS (Total: 179 journals)
Showing 1 - 200 of 277 Journals sorted alphabetically
Acta Electronica Malaysia     Open Access  
Advances in Biosensors and Bioelectronics     Open Access   (Followers: 7)
Advances in Electrical and Electronic Engineering     Open Access   (Followers: 5)
Advances in Electronics     Open Access   (Followers: 78)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 8)
Advances in Microelectronic Engineering     Open Access   (Followers: 13)
Advances in Power Electronics     Open Access   (Followers: 33)
Advancing Microelectronics     Hybrid Journal  
Aerospace and Electronic Systems, IEEE Transactions on     Hybrid Journal   (Followers: 315)
American Journal of Electrical and Electronic Engineering     Open Access   (Followers: 24)
Annals of Telecommunications     Hybrid Journal   (Followers: 9)
APSIPA Transactions on Signal and Information Processing     Open Access   (Followers: 9)
Archives of Electrical Engineering     Open Access   (Followers: 13)
Autonomous Mental Development, IEEE Transactions on     Hybrid Journal   (Followers: 8)
Bell Labs Technical Journal     Hybrid Journal   (Followers: 28)
Bioelectronics in Medicine     Hybrid Journal  
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 19)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 36)
Biomedical Instrumentation & Technology     Hybrid Journal   (Followers: 6)
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 12)
BULLETIN of National Technical University of Ukraine. Series RADIOTECHNIQUE. RADIOAPPARATUS BUILDING     Open Access   (Followers: 1)
Bulletin of the Polish Academy of Sciences : Technical Sciences     Open Access   (Followers: 1)
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 47)
China Communications     Full-text available via subscription   (Followers: 8)
Chinese Journal of Electronics     Hybrid Journal  
Circuits and Systems     Open Access   (Followers: 15)
Consumer Electronics Times     Open Access   (Followers: 5)
Control Systems     Hybrid Journal   (Followers: 269)
Edu Elektrika Journal     Open Access   (Followers: 1)
Electrica     Open Access  
Electronic Design     Partially Free   (Followers: 105)
Electronic Markets     Hybrid Journal   (Followers: 7)
Electronic Materials Letters     Hybrid Journal   (Followers: 4)
Electronics     Open Access   (Followers: 86)
Electronics and Communications in Japan     Hybrid Journal   (Followers: 10)
Electronics For You     Partially Free   (Followers: 92)
Electronics Letters     Hybrid Journal   (Followers: 26)
Elkha : Jurnal Teknik Elektro     Open Access  
Embedded Systems Letters, IEEE     Hybrid Journal   (Followers: 51)
Energy Harvesting and Systems     Hybrid Journal   (Followers: 4)
Energy Storage Materials     Full-text available via subscription   (Followers: 3)
EPJ Quantum Technology     Open Access  
EURASIP Journal on Embedded Systems     Open Access   (Followers: 11)
Facta Universitatis, Series : Electronics and Energetics     Open Access  
Foundations and Trends® in Communications and Information Theory     Full-text available via subscription   (Followers: 6)
Foundations and Trends® in Signal Processing     Full-text available via subscription   (Followers: 10)
Frequenz     Hybrid Journal   (Followers: 1)
Frontiers of Optoelectronics     Hybrid Journal   (Followers: 1)
Geoscience and Remote Sensing, IEEE Transactions on     Hybrid Journal   (Followers: 191)
Haptics, IEEE Transactions on     Hybrid Journal   (Followers: 4)
IACR Transactions on Symmetric Cryptology     Open Access  
IEEE Antennas and Propagation Magazine     Hybrid Journal   (Followers: 97)
IEEE Antennas and Wireless Propagation Letters     Hybrid Journal   (Followers: 77)
IEEE Journal of Emerging and Selected Topics in Power Electronics     Hybrid Journal   (Followers: 46)
IEEE Journal of the Electron Devices Society     Open Access   (Followers: 9)
IEEE Journal on Exploratory Solid-State Computational Devices and Circuits     Hybrid Journal   (Followers: 1)
IEEE Power Electronics Magazine     Full-text available via subscription   (Followers: 66)
IEEE Transactions on Antennas and Propagation     Full-text available via subscription   (Followers: 70)
IEEE Transactions on Automatic Control     Hybrid Journal   (Followers: 56)
IEEE Transactions on Circuits and Systems for Video Technology     Hybrid Journal   (Followers: 19)
IEEE Transactions on Consumer Electronics     Hybrid Journal   (Followers: 40)
IEEE Transactions on Electron Devices     Hybrid Journal   (Followers: 19)
IEEE Transactions on Information Theory     Hybrid Journal   (Followers: 26)
IEEE Transactions on Power Electronics     Hybrid Journal   (Followers: 71)
IEEE Transactions on Signal and Information Processing over Networks     Full-text available via subscription   (Followers: 12)
IEICE - Transactions on Electronics     Full-text available via subscription   (Followers: 12)
IEICE - Transactions on Information and Systems     Full-text available via subscription   (Followers: 5)
IET Cyber-Physical Systems : Theory & Applications     Open Access   (Followers: 1)
IET Microwaves, Antennas & Propagation     Hybrid Journal   (Followers: 35)
IET Nanodielectrics     Open Access  
IET Power Electronics     Hybrid Journal   (Followers: 46)
IET Smart Grid     Open Access  
IET Wireless Sensor Systems     Hybrid Journal   (Followers: 18)
IETE Journal of Education     Open Access   (Followers: 4)
IETE Journal of Research     Open Access   (Followers: 11)
IETE Technical Review     Open Access   (Followers: 13)
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems)     Open Access   (Followers: 3)
Industrial Electronics, IEEE Transactions on     Hybrid Journal   (Followers: 58)
Industry Applications, IEEE Transactions on     Hybrid Journal   (Followers: 24)
Informatik-Spektrum     Hybrid Journal   (Followers: 2)
Instabilities in Silicon Devices     Full-text available via subscription   (Followers: 1)
Intelligent Transportation Systems Magazine, IEEE     Full-text available via subscription   (Followers: 13)
International Journal of Advanced Research in Computer Science and Electronics Engineering     Open Access   (Followers: 18)
International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems     Open Access   (Followers: 10)
International Journal of Antennas and Propagation     Open Access   (Followers: 11)
International Journal of Applied Electronics in Physics & Robotics     Open Access   (Followers: 5)
International Journal of Computational Vision and Robotics     Hybrid Journal   (Followers: 6)
International Journal of Control     Hybrid Journal   (Followers: 12)
International Journal of Electronics     Hybrid Journal   (Followers: 7)
International Journal of Electronics and Telecommunications     Open Access   (Followers: 13)
International Journal of Granular Computing, Rough Sets and Intelligent Systems     Hybrid Journal   (Followers: 2)
International Journal of High Speed Electronics and Systems     Hybrid Journal  
International Journal of Image, Graphics and Signal Processing     Open Access   (Followers: 14)
International Journal of Microwave and Wireless Technologies     Hybrid Journal   (Followers: 8)
International Journal of Nano Devices, Sensors and Systems     Open Access   (Followers: 12)
International Journal of Nanoscience     Hybrid Journal   (Followers: 1)
International Journal of Numerical Modelling: Electronic Networks, Devices and Fields     Hybrid Journal   (Followers: 4)
International Journal of Power Electronics     Hybrid Journal   (Followers: 24)
International Journal of Review in Electronics & Communication Engineering     Open Access   (Followers: 4)
International Journal of Sensors, Wireless Communications and Control     Hybrid Journal   (Followers: 10)
International Journal of Systems, Control and Communications     Hybrid Journal   (Followers: 4)
International Journal of Wireless and Microwave Technologies     Open Access   (Followers: 6)
International Transaction of Electrical and Computer Engineers System     Open Access   (Followers: 2)
JAREE (Journal on Advanced Research in Electrical Engineering)     Open Access  
Journal of Biosensors & Bioelectronics     Open Access   (Followers: 3)
Journal of Advanced Dielectrics     Open Access   (Followers: 1)
Journal of Artificial Intelligence     Open Access   (Followers: 10)
Journal of Circuits, Systems, and Computers     Hybrid Journal   (Followers: 4)
Journal of Computational Intelligence and Electronic Systems     Full-text available via subscription   (Followers: 1)
Journal of Electrical and Electronics Engineering Research     Open Access   (Followers: 24)
Journal of Electrical Bioimpedance     Open Access   (Followers: 2)
Journal of Electrical Engineering & Electronic Technology     Hybrid Journal   (Followers: 7)
Journal of Electrical, Electronics and Informatics     Open Access  
Journal of Electromagnetic Analysis and Applications     Open Access   (Followers: 7)
Journal of Electromagnetic Waves and Applications     Hybrid Journal   (Followers: 8)
Journal of Electronic Design Technology     Full-text available via subscription   (Followers: 6)
Journal of Electronics (China)     Hybrid Journal   (Followers: 4)
Journal of Energy Storage     Full-text available via subscription   (Followers: 4)
Journal of Engineered Fibers and Fabrics     Open Access  
Journal of Field Robotics     Hybrid Journal   (Followers: 2)
Journal of Guidance, Control, and Dynamics     Hybrid Journal   (Followers: 168)
Journal of Information and Telecommunication     Open Access   (Followers: 1)
Journal of Intelligent Procedures in Electrical Technology     Open Access   (Followers: 3)
Journal of Low Power Electronics     Full-text available via subscription   (Followers: 7)
Journal of Low Power Electronics and Applications     Open Access   (Followers: 9)
Journal of Microelectronics and Electronic Packaging     Hybrid Journal  
Journal of Microwave Power and Electromagnetic Energy     Hybrid Journal  
Journal of Microwaves, Optoelectronics and Electromagnetic Applications     Open Access   (Followers: 10)
Journal of Nuclear Cardiology     Hybrid Journal  
Journal of Optoelectronics Engineering     Open Access   (Followers: 4)
Journal of Physics B: Atomic, Molecular and Optical Physics     Hybrid Journal   (Followers: 28)
Journal of Power Electronics & Power Systems     Full-text available via subscription   (Followers: 11)
Journal of Semiconductors     Full-text available via subscription   (Followers: 5)
Journal of Sensors     Open Access   (Followers: 26)
Journal of Signal and Information Processing     Open Access   (Followers: 9)
Jurnal Rekayasa Elektrika     Open Access  
Jurnal Teknik Elektro     Open Access  
Jurnal Teknologi Elektro     Open Access  
Kinetik : Game Technology, Information System, Computer Network, Computing, Electronics, and Control     Open Access  
Learning Technologies, IEEE Transactions on     Hybrid Journal   (Followers: 12)
Magnetics Letters, IEEE     Hybrid Journal   (Followers: 7)
Majalah Ilmiah Teknologi Elektro : Journal of Electrical Technology     Open Access   (Followers: 2)
Metrology and Measurement Systems     Open Access   (Followers: 5)
Microelectronics and Solid State Electronics     Open Access   (Followers: 18)
Nanotechnology Magazine, IEEE     Full-text available via subscription   (Followers: 33)
Nanotechnology, Science and Applications     Open Access   (Followers: 6)
Nature Electronics     Hybrid Journal  
Networks: an International Journal     Hybrid Journal   (Followers: 5)
Open Electrical & Electronic Engineering Journal     Open Access  
Open Journal of Antennas and Propagation     Open Access   (Followers: 8)
Optical Communications and Networking, IEEE/OSA Journal of     Full-text available via subscription   (Followers: 15)
Paladyn. Journal of Behavioral Robotics     Open Access   (Followers: 1)
Power Electronics and Drives     Open Access   (Followers: 1)
Problemy Peredachi Informatsii     Full-text available via subscription  
Progress in Quantum Electronics     Full-text available via subscription   (Followers: 7)
Pulse     Full-text available via subscription   (Followers: 5)
Radiophysics and Quantum Electronics     Hybrid Journal   (Followers: 2)
Recent Advances in Communications and Networking Technology     Hybrid Journal   (Followers: 3)
Recent Advances in Electrical & Electronic Engineering     Hybrid Journal   (Followers: 9)
Research & Reviews : Journal of Embedded System & Applications     Full-text available via subscription   (Followers: 5)
Security and Communication Networks     Hybrid Journal   (Followers: 2)
Selected Topics in Applied Earth Observations and Remote Sensing, IEEE Journal of     Hybrid Journal   (Followers: 53)
Semiconductors and Semimetals     Full-text available via subscription   (Followers: 1)
Sensing and Imaging : An International Journal     Hybrid Journal   (Followers: 2)
Services Computing, IEEE Transactions on     Hybrid Journal   (Followers: 4)
Software Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 75)
Solid-State Circuits Magazine, IEEE     Hybrid Journal   (Followers: 13)
Solid-State Electronics     Hybrid Journal   (Followers: 9)
Superconductor Science and Technology     Hybrid Journal   (Followers: 2)
Synthesis Lectures on Power Electronics     Full-text available via subscription   (Followers: 3)
Technical Report Electronics and Computer Engineering     Open Access  
TELE     Open Access  
Telematique     Open Access  
TELKOMNIKA (Telecommunication, Computing, Electronics and Control)     Open Access   (Followers: 9)
Universal Journal of Electrical and Electronic Engineering     Open Access   (Followers: 6)
Visión Electrónica : algo más que un estado sólido     Open Access   (Followers: 1)
Wireless and Mobile Technologies     Open Access   (Followers: 6)
Wireless Power Transfer     Full-text available via subscription   (Followers: 4)
Women in Engineering Magazine, IEEE     Full-text available via subscription   (Followers: 11)
Електротехніка і Електромеханіка     Open Access  

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Similar Journals
Journal Cover
Optical Communications and Networking, IEEE/OSA Journal of
Journal Prestige (SJR): 0.504
Citation Impact (citeScore): 3
Number of Followers: 15  
 
  Full-text available via subscription Subscription journal
ISSN (Print) 1943-0620 - ISSN (Online) 1943-0639
Published by IEEE Homepage  [191 journals]
  • Inside front cover
    • Abstract: Presents a listing of the editorial board, board of governors, current staff, committee members, and/or society editors for this issue of the publication.
      PubDate: March 2019
      Issue No: Vol. 11, No. 3 (2019)
       
  • Spatial channel network (SCN): Opportunities and challenges of introducing
           spatial bypass toward the massive SDM era [invited]
    • Authors: Masahiko Jinno;
      Pages: 1 - 14
      Abstract: Considering middle-term predictions of the need for commercial 10-Tb/s optical interfaces working in 1-P b/s optical transport systems by 2024 and recalling the introduction of the optical bypass when entering the wavelength-abundant era in the early 2000s, we re-evaluate the values of hierarchical optical network architecture in light of the forthcoming massive spatial division multiplexing (SDM) era. We introduce a spatial channel (SCh) network (SCN) architecture, where the SDM layer is explicitly defined as a new networking layer that supports the new multiplexing technology of SDM. In an SCN, optical channels (OChs) accommodated in an express SCh bypass the overlying wavelength cross-connects (WXCs) using spatial cross-connects (SXCs) on the route. As one challenge that SCNs will present, we point out that an excessively large SXC insertion loss reduces the optical reach for spectrally groomed OChs. We show that the optical reach of spectrally groomed OChs can be maintained at almost the same level as that for an OCh transported through a conventional single-layer WDM network thanks to the low-loss features of commercially available spatial switches and foreseeable low-loss SDM multiplexers and demultiplexers. As another challenge, we discuss how to achieve growable, reliable, and cost-effective SXCs. We propose two SXC architectures based on sub-matrix switches and core-selective switches. Simple cost assessment shows that the proposed architectures are more cost-effective than the full-size matrix switch-based architecture with 1 + 1 equipment protection and conventional stacked WXC architecture.
      PubDate: March 2019
      Issue No: Vol. 11, No. 3 (2019)
       
  • Path-based fragmentation metric and RSA algorithms for elastic optical
           networks
    • Authors: Federico Pederzolli;Domenico Siracusa;Andrea Zanardi;Gabriele Galimberti;Domenico La Fauci;Giovanni Martinelli;
      Pages: 15 - 25
      Abstract: Flexi-grid technology has emerged as the evolution of fixed-grid DWDM core optical networks, enabling more efficient utilization of spectral resources and leading to higher overall network throughput. However, it suffers from an aggravated form of the spectrum fragmentation problem that affects fixed-grid networks. This work presents a novel path-based metric to better evaluate the fragmentation of spectral resources in flexi-grid optical networks, which considers that not all links of a path may contain enough free frequency slots and the likelihood that an end-to-end spectral void is large enough to house a connection. Furthermore, two families of heuristic routing and spectrum allocation (RSA) algorithms that preventively attempt to minimize the value of an input fragmentation metric are presented. These are used to evaluate the effectiveness of multiple metrics, both introduced in this work and from the existing literature, via simulations. We find that both proposed families can perform better, in terms of blocking probability and achievable network throughput, than the well-known K-shortest paths routing with a first fit spectrum allocation policy, with one of them trading performance for lower complexity, and that the proposed fragmentation metric outperforms the existing ones.
      PubDate: March 2019
      Issue No: Vol. 11, No. 3 (2019)
       
  • Load balancing in fixed-routing optical networks with weighted ordering
           heuristics
    • Authors: L. H. Bonani;J. C. F. Queiroz;M. L. F. Abbade;F. Callegati;
      Pages: 26 - 38
      Abstract: In this paper we show that the adoption of a simple weighted ordering heuristic strategy to find fixed shortest path routes in a topology can improve load-balancing and, consequently, network performance. We compared our fixed routing strategies against the k-shortest paths (k-SP) fixed-alternate routing strategy for three different mesh topologies considering fixed grid networks (FGNs) and elastic optical networks (EONs). The results show that our simple fixed routing strategies can improve network performance for an optical network system, even compared with the fixed alternate routing and always using the shortest path. Results also show that such easy strategies act mainly in longer routes, increasing their probability of use and balancing the link load distribution.
      PubDate: March 2019
      Issue No: Vol. 11, No. 3 (2019)
       
  • Iterative resource allocation algorithm for EONs based on a linearized GN
           model
    • Authors: Yuxin Xu;Li Yan;Erik Agrell;Maïté Brandt-Pearce;
      Pages: 39 - 51
      Abstract: Elastic optical networks (EONs) rely on efficient resource planning to meet future communication needs and avoid resource overprovisioning. Estimation of physical-layer impairments (PLIs) in EONs plays an important role in the network planning stage. Traditionally, the transmission reach (TR) and Gaussian noise (GN) models have been broadly employed in the estimation of the PLIs. However, the TR model cannot accurately estimate PLIs, whereas the GN model is incompatible with state of the art linear optimization solvers. In this paper, we propose a physical-layer estimation model based on the GN model, referred to as the conservative linearized Gaussian noise (CLGN) model. To address the routing, spectrum, and regeneration assignment problem accounting for PLIs, we introduce a link-based mixed integer linear programming formulation employing the CLGN, whose heavy computational burden is relieved by a heuristic approach referred to as the sequential iterative optimization algorithm. We show through simulation that network resources such as spectrum and regeneration nodes can be saved utilizing the CLGN model rather than the TR model. Our proposed heuristic algorithm speeds up the optimization process and provides better resource usage compared to state of the art algorithms on benchmark networks.
      PubDate: March 2019
      Issue No: Vol. 11, No. 3 (2019)
       
  • Efficient real-time scalable make-before-break network re-routing
    • Authors: Brigitte Jaumard;Huy Quang Duong;Romualdas Armolavicius;Todd Morris;Petar Djukic;
      Pages: 52 - 66
      Abstract: Dynamic traffic in optical networks leads to capacity fragmentation, which significantly reduces network performance. Consequently, non-disruptive re-routing has attracted a lot of attention from network providers as it dramatically improves the amount of traffic that can be granted with a good quality of service. The recent development of flexible and software-defined networks is urgently calling for faster real-time reconfiguration algorithms at all network layers, while being highly efficient in terms of optimized reconfiguration of connections. We propose a very efficient non-disruptive bandwidth defragmentation heuristic (called mbb_df_h) with a make-before-break (MBB) strategy at the user layer. In order to assess its accuracy, we also develop a near- optimal two-phase defragmentation process. First, we formulate an exact optimization model for the decomposition scheme in order to compute the best re-routing, i.e., with minimum bandwidth requirements. Second, we investigate whether the resulting re-routing can be reached with a MBB policy; if not, we exhibit the best possible MBB re-routing. We conduct extensive numerical experiments on several data sets. We first run experiments on small to medium data sets so that the solution efficiency of the mbb_df_h heuristic can be compared with the two-phase optimization models. Next, we focus on the real-time scalability of the mbb_df_h heuristic on large realistic data sets.
      PubDate: March 2019
      Issue No: Vol. 11, No. 3 (2019)
       
  • Protection schemes for key service in optical networks secured by quantum
           key distribution (QKD)
    • Authors: Hua Wang;Yongli Zhao;Xiaosong Yu;Zhangchao Ma;Jianquan Wang;Avishek Nag;Longteng Yi;Jie Zhang;
      Pages: 67 - 78
      Abstract: Quantum key distribution (QKD) is considered a secure solution for key distribution and applied in optical networks to overcome security issues by providing key services in different lightpaths. In optical networks, lightpaths in fibers can be used for the delivery of QKD due to their good transmission performance. Accordingly, optical networks secured by QKD have been regarded as an important paradigm, and survivability in this paradigm is an issue worthy of study. In this paper, we focus on the protection schemes for key services in optical networks secured by QKD. Specifically, in consistency with two characteristics of key services (i.e., the key-updating process and key-volume adaptive routing), two key-volume adaptive protection schemes (i.e., dedicated protection and shared protection) are proposed for the networks against link failures. In such scenarios, the designed key-protection threshold can alleviate the tight network resources caused by the key-updating process. Simulation work has been conducted to evaluate the performance of the proposed schemes in terms of blocking probability, resource utilization, and proportion of secret-key consumption with different key-protection thresholds and update periods. Numerical results show that the two proposed schemes are effective in providing protection. Furthermore, evaluating the impact of protection on network security verifies a trade-off that exists between how much protection can be provided for key services versus the overall security of the network, given a certain resource budget.
      PubDate: March 2019
      Issue No: Vol. 11, No. 3 (2019)
       
  • Economic analysis of TWDM PONs: A sustainability and policy-making
           perspective
    • Authors: Washim Uddin Mondal;Dibbendu Roy;Sourav Dutta;Goutam Das;
      Pages: 79 - 94
      Abstract: The time- and wavelength-division-multiplexed (TWDM) passive optical network (PON) is a popular choice for future access technology. However, a comprehensive understanding of its economics is still beyond the reach of the current literature. For example, it is not clearly understood which techno-economic factors make this technology sustainable. Similarly, the role of the government in influencing the users' welfare has also remained opaque. In this paper, we uncover these important issues. Portraying the operator as a profit maximizer, we develop a mathematical model that encapsulates both economic and technical aspects of the network. Within this framework, the profit maximization problem of an operator turns out to be a mixed-integer nonlinear program that, in general, is exponentially complex. Fortunately, using a widely accepted assumption on user demand, we reduce this to a discrete optimization. Moreover, for a large class of demands, a polynomially complex algorithm is developed to solve this problem. For homogeneous linear demands, we analytically characterize the system parameters that ensure the sustainability of the network in the long run. In addition, the influence of different system parameters on the economic outcomes is studied. Our investigation reveals several policy-making insights. For example, it unveils a fundamental trade-off between the number of users and the aggregated welfare. Also, it suggests that the leasing of fibers isa better deployment policy for the government as compared to the other alternatives. Finally, we show that the architectural details of the network play a key role in deciding the economics. In particular, one variant of the PON is shown to be more viable than another.
      PubDate: March 2019
      Issue No: Vol. 11, No. 3 (2019)
       
  • Unified error performance of a multihop DF-FSO network with aperture
           averaging
    • Authors: Deepti Agarwal;Ankur Bansal;
      Pages: 95 - 106
      Abstract: In this paper, the performance of a multihop decode-and-forward (DF) based freespace optical (FSO) network is investigated over a unified exponentiated Weibull distributed atmospheric turbulence channel with pointing error and both types of detection techniques, i.e., heterodyne detection and intensity modulation/direct detection (IM/DD). We consider the aperture averaging receivers at both the intermediate relays and the destination to diminish the disadvantageous impact of atmospheric turbulence. First, we derive the new unified expression of the probability density function of the instantaneous signal-to-noise ratio (SNR). Based on the derived statistics, the unified closed-form expression of the average symbol error rate (SER) for the considered multihop network employing differentially modulated M-ary phase shift keying data, is obtained by utilizing a transition probability matrix. It is shown that increasing the hop count by 1 provides similar performance gain under both detection schemes. Further, a small increase in aperture size results in greater improvement under moderate turbulence rather than strong turbulence. The mutual information of the considered network is obtained with binary differential data, and it is demonstrated through results that, in the low-SNR region, the heterodyne receiver provides less mutual information as compared with the IM/DD receiver. However, beyond a particular SNR value (which depends on the hop count, aperture size, and turbulence strength), the heterodyne receiver attains more mutual information in comparison with the IM/DD receiver. The unified expression of outage probability for the DF-based multihop FSO network is also derived in terms of Meijer's G function. In addition, the asymptotic SER performance is examined in order to get impactful insight of network performance at high SNRs. All analytical results derived are verified through simulations.
      PubDate: March 2019
      Issue No: Vol. 11, No. 3 (2019)
       
  • Mechanism design and performance analysis of coordinated registration
           protocol for NG-EPON
    • Authors: Wei Wang;Wei Guo;Weisheng Hu;
      Pages: 107 - 117
      Abstract: The IEEE 802.3ca task force is studying the next generation Ethernet passive optical network (NG-EPON), which introduces channel bonding to enable optical network units (ONUs) to bundle multiple wavelength channels to achieve higher peak rates. In order to register these multi-channel ONUs, the optical line terminal (OLT) needs to acquire ONUs' device information, assign working parameters, and verify the connectivity of each channel. Traditional ONU registration protocol, designed for singlechannel ONUs, is not suitable for multi-channel ONUs because it cannot guarantee the channel connectivities of all channels. Therefore, it is essential to extend the traditional registration protocol or design a new registration protocol for NG-EPON multi-channel ONUs. In this paper, we first extend the traditional registration protocol directly to satisfy the requirements of registering multi-channel ONUs. Besides, we propose a novel registration protocol based on the coordination of channel terminals. In order to compare the performances of two registration protocols, we model their registration processes, analyze their registration delays, and find their corresponding influence factors. Simulation results show that our proposed registration protocol has a smaller registration delay as well as better horizontal scalability.
      PubDate: March 2019
      Issue No: Vol. 11, No. 3 (2019)
       
  • Alien wavelengths in national research and education network
           infrastructures based on open line systems: Challenges and opportunities
    • Authors: Henrik Wessing;Pavel Skoda;Martin Nordal Petersen;Artur Pilimon;Piotr Rydlichowski;Guy Roberts;Rob Smets;Jan Radil;Josef Vojtech;Rasmus Lund;Zifan Zhou;Chrysostomos Tziouvaras;Kurosh Bozorgebrahimi;
      Pages: 118 - 129
      Abstract: The European National Research and Education Networks have a long tradition of shared use of resources, in particular, by deploying alien wavelengths (AWs) that disaggregate the transponders from the optical transport network. This network evolution is being extended by making use of White Boxes and fully disaggregated transport networks. In this paper, management architecture and White Box interoperability scenarios are discussed, and it is shown that a software defined networking based solution can be used to manage selected optical White Boxes. Novel transport network simulation tools are compared with existing tools and validated against physical links to highlight the potential and applicability of such tools for analysis and estimation of performance evolution trends for AW deployments. Results show good correlation between new and existing tools, although initially developed for different purposes.
      PubDate: March 2019
      Issue No: Vol. 11, No. 3 (2019)
       
  • Grid architecture of a metro-access optical network to support
           discretionary peer-to-peer intracommunication and intercommunication
           between ONUs
    • Authors: Xingfeng Li;Chaoqin Gan;Yuqi Yan;Hubao Qiao;
      Pages: 130 - 139
      Abstract: Direct communication between optical network units (ONUs) is an important function in metro-access optical networks. In this paper, a grid architecture supporting the intracommunication and intercommunication between ONUs is proposed. By employing an arrayed waveguide grating (AWG) and coarse wavelength division multiplexer in a remote node, not only can the intracommunication between ONUs within one WDM passive optical network (PON) be realized, but the intercommunication between ONUs belonging to different WDM-PONs can also be supported. By allocating one specific wavelength to the ONU to transmit direct communication signals and utilizing the periodic assignment property of the AWG, discretionary peer-to-peer direct communication between ONUs can be achieved. By adopting a grid topology and expanding module, the network can not only realize multiple-fault protection but also carry out online expansion. Both the scalability and the reliability of the network can be improved. Finally, the performance analyses and the simulations verify the feasibility of the proposed architecture.
      PubDate: March 2019
      Issue No: Vol. 11, No. 3 (2019)
       
  • Accurate quality of transmission estimation with machine learning
    • Authors: Ippokratis Sartzetakis;Konstantinos Kostas Christodoulopoulos;Emmanouel Manos Varvarigos;
      Pages: 140 - 150
      Abstract: In optical transport networks the quality of transmission (QoT) is estimated before provisioning new connections or upgrading existing ones. Traditionally, a physical layer model (PLM) is used for QoT estimation coupled with high margins to account for the model inaccuracy and the uncertainty in the evolving physical layer conditions. Reducing the margins increases network efficiency but requires accurate QoT estimation. We present two machine learning (ML) approaches to formulate such an accurate QoT estimator. We gather physical layer feedback, by monitoring the QoT of existing connections, to understand the actual physical conditions of the network. These data are used to train either the input parameters of a PLM or a machine learning model (ML-M). The proposed ML methods account for variations and uncertainties in equipment parameters, such as fiber attenuation, dispersion, and nonlinear coefficients, or amplifier noise figure per span, which are typical in deployed networks. We evaluated the accuracy of the proposed methods under various uncertainty scenarios and compared them to QoT estimators proposed in the literature. The results indicate that our estimators yield excellent accuracy with a relatively small amount of data, outperforming other prior estimators.
      PubDate: March 2019
      Issue No: Vol. 11, No. 3 (2019)
       
 
 
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