Photonic Network Communications最新文献_第2页

Survivable transparent OFDM optical grids/clouds: fragmentation aware, resource efficient protection with fast failure recovery 可存活的透明 OFDM 光网/云：分片感知、资源高效保护与快速故障恢复

IF 1.7 4区计算机科学

Photonic Network Communications Pub Date : 2024-01-14 DOI: 10.1007/s11107-023-01011-2

{"title":"Survivable transparent OFDM optical grids/clouds: fragmentation aware, resource efficient protection with fast failure recovery","authors":"","doi":"10.1007/s11107-023-01011-2","DOIUrl":"https://doi.org/10.1007/s11107-023-01011-2","url":null,"abstract":"<h3>Abstract</h3> <p>Due to high spectral efficiency and flexibility of orthogonal frequency division multiplexing (OFDM) technology, OFDM-based optical grids/clouds are fast replacing WDM grids/clouds. As grids and clouds process data intensive tasks, protection of optical grids and clouds from an arbitrary fiber-cut is extremely important. Employing a protection scheme leads to idle resource reservation, and data are continuously lost till protection (backup) paths become operational after a link failure. So, a protection scheme should not only minimize reservation of idle resources; it must also make the network recover quickly from a failure. In a dynamic scenario, another important issue is spectral fragmentation which leads to increased blocking of requests. In this paper, we address the problem of providing protection to OFDM-based transparent optical grids/clouds ensuring fast failure recovery with minimizing of both resource consumption and spectral fragmentation to the extent possible. To the best of our knowledge, this is the first paper to address the said problem for transparent OFDM optical grids/clouds. Performance comparisons show that the proposed polynomial time algorithm, <em>fragmentation-aware resource-efficient protection with fast recovery</em> (<em>FRPFR</em>) decreases spectrum utilization, decreases bandwidth blocking ratio and increases backup spectrum sharing by 27.88%, 35.37% and 35.94%, respectively, over algorithm <em>protection with fast recovery</em> (<em>PFR</em>) and by 11.95%, 20.29% and 14.35%, respectively, over algorithm <em>resource-efficient protection with fast recovery</em> (<em>RPFR</em>).</p>","PeriodicalId":20057,"journal":{"name":"Photonic Network Communications","volume":"27 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139461613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ZA-LMS-based sparse channel estimator in multi-carrier VLC system 多载波 VLC 系统中基于 ZA-LMS 的稀疏信道估计器

IF 1.7 4区计算机科学

Photonic Network Communications Pub Date : 2024-01-12 DOI: 10.1007/s11107-023-01009-w

Anupma Sharma, Vidya Bhasker Shukla, V. Bhatia, Kwonhue Choi

引用次数: 0

Dual optimization for enhancing TRA in MCF-based SDM-EONs 为增强基于 MCF 的 SDM-EON 的 TRA 而进行的双重优化

IF 1.7 4区计算机科学

Photonic Network Communications Pub Date : 2024-01-03 DOI: 10.1007/s11107-023-01008-x

{"title":"Dual optimization for enhancing TRA in MCF-based SDM-EONs","authors":"","doi":"10.1007/s11107-023-01008-x","DOIUrl":"https://doi.org/10.1007/s11107-023-01008-x","url":null,"abstract":"<h3>Abstract</h3> <p>A fine-grained, flexible frequency grid of elastic optical transmission and space division multiplexing (SDM) in conjunction with spectrally efficient modulations is an ideal solution for the impending capacity crunch. The routing, modulation, core, and spectrum assignment (RMCSA) problem is an important lightpath resource assignment problem in SDM elastic optical networks (SDM-EONs). Intercore Crosstalk (XT) degrades the quality of parallel transmissions on adjacent cores, and the RMCSA algorithm must satisfy XT requirements while optimizing network performance. There is an indirect trade-off between spectrum utilization and XT tolerance; while higher modulations are more spectrum-efficient, they are also less tolerant of XT because they allow fewer connections between neighboring cores on the overlapping spectrum. In the presence of XT, the Tridental Resource Assignment algorithm (TRA) has been shown to optimally assign resources in multicore fiber networks. Using the tridental coefficient (TC), this algorithm strikes a balance between spectrum utilization and XT. However, TRA is computationally expensive because TC is calculated for all the possible candidate resource sets for each lightpath request. In this paper, we demonstrate that acceptable or better TRA performance can be achieved while reducing computational overhead than traditional TRA. We achieve that using different stages of offline optimization, required only once. We demonstrate that by using tailored weights in TC, the performance of TRA can be enhanced further. We observe that acceptable TRA performance can be achieved with as low as 40% of the total computations and that adjusting weights reduces the bandwidth blocking of TRA, which is already performing better than the baseline algorithms, by approximately two orders of magnitude.</p>","PeriodicalId":20057,"journal":{"name":"Photonic Network Communications","volume":"26 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139083625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bit-level probability shaping for partial parallel bit sequences based on power partition in OOFDM system OOFDM系统中基于功率划分的部分并行位序列的位级概率整形

4区计算机科学

Photonic Network Communications Pub Date : 2023-11-07 DOI: 10.1007/s11107-023-01007-y

Ling Qiu, Jianxin Ma

引用次数: 0

Analysis and investigation of a novel underwater channel model for OWC under log-normal turbulent condition 对数正态湍流条件下OWC水下通道模型的分析与研究

4区计算机科学

Photonic Network Communications Pub Date : 2023-10-29 DOI: 10.1007/s11107-023-01006-z

Manas R. Biswal, Tahesin Samira Delwar, Abrar Siddique, Prangyadarsini Behera, Jee-Youl Ryu

引用次数: 0

Analytical solution for ginzburg–landau equation in discrete solitons laser arrays lattices via non-perturbation methods 用非微扰方法解析解离散孤子激光阵列晶格中的金兹堡-朗道方程

4区计算机科学

Photonic Network Communications Pub Date : 2023-09-20 DOI: 10.1007/s11107-023-01005-0

Monika Rani, Vikramjeet Singh, Rakesh Goyal

引用次数: 0

Survivable routing problem on EONs with slicers for SBPP scheme SBPP方案中带有切片器的eon的可生存路由问题

4区计算机科学

Photonic Network Communications Pub Date : 2023-09-12 DOI: 10.1007/s11107-023-01004-1

Der-Rong Din

引用次数: 0

Performance analysis of hybrid underwater wireless system for shallow sea monitoring 浅海监测混合水下无线系统性能分析

IF 1.7 4区计算机科学

Photonic Network Communications Pub Date : 2023-09-03 DOI: 10.1007/s11107-023-01003-2

Romya Bhatnagar, Parul Garg

引用次数: 0

Fiber Bragg grating as a sole dispersion compensation unit for a long haul optical link 光纤布拉格光栅作为长距离光链路的唯一色散补偿单元

IF 1.7 4区计算机科学

Photonic Network Communications Pub Date : 2023-09-02 DOI: 10.1007/s11107-023-01001-4

Baseerat Gul, Faroze Ahmad

引用次数: 0

Fragmentation management to reduce bandwidth wastage in SDM-EON networks 减少SDM-EON网络带宽浪费的分段管理

IF 1.7 4区计算机科学

Photonic Network Communications Pub Date : 2023-08-30 DOI: 10.1007/s11107-023-01002-3

Yaghoub Khorasani, Akbar Ghaffarpour Rahbar, Mohammad Jafari-Beyrami

引用次数: 2