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Flexible optical networks (FONs) are being adopted to accommodate the increasingly heterogeneous traffic in today's Internet. However, in presence of high traffic load, not all offered traffic can be satisfied at all time. As carried…

网络与互联网体系结构 · 计算机科学 2021-06-15 Cao Chen , Fen Zhou , Massimo Tornatore , Shilin Xiao

We present an evolutionary programming algorithm for solving the dynamic routing and wavelength assignment (DRWA) problem in optical wavelength-division multiplexing (WDM) networks under wavelength continuity constraint. We assume an ideal…

网络与互联网体系结构 · 计算机科学 2010-07-15 Urmila Bhanja , Sudipta Mahapatra , Rajarshi Roy

Bandwidth Allocation Models (BAMs) configure and handle resource allocation (bandwidth, LSPs, fiber, slots) in networks in general (IP/MPLS/DS-TE, optical domain, other). In this paper, BAMs are considered for elastic optical networks slot…

网络与互联网体系结构 · 计算机科学 2019-04-18 Rafael F. Reale , Romildo M. S. Bezerra , Gilvan Duraes , Alexandre C. Fontinele , Andre C. B. Soares , Joberto S. B. Martins

Multi-band transmission systems have emerged as a potential answer to the limited capacity of silica based optical fiber. It is based on utilizing the complete low-loss region of optical fibers. Additionally, elastic optical networks (EON)…

信号处理 · 电气工程与系统科学 2021-02-25 Esteban Paz , Gabriel Saavedra

The extension of elastic optical networks (EON) to multi-band transmission (MB-EON) shows promise in enhancing spectral efficiency, throughput, and long-term cost-effectiveness for telecom operators. However, designing MB-EON networks…

In flexible-grid elastic optical networks (EONs), the ordering of frequency channels plays a crucial role in managing inter-channel interference and ensuring signal quality. We address the Channel Ordering Problem (COP) by reformulating it…

光学 · 物理学 2025-11-18 Liangshun Wu , Wen Chen , Qingqing Wu

Network operators diversify service offerings and enhance network efficiency by leveraging bandwidth-variable transceivers and colorless flexible-grid reconfigurable optical add-drop multiplexers (ROADMs). Nonetheless, the paradigm shift…

信号处理 · 电气工程与系统科学 2024-01-23 Faranak Khosravi , Mehdi Shadaram

We propose a two-stage algorithm for energy-efficient resource allocation constrained to QoS and physical requirements in OFDM-based EONs. The first stage deals with routing, grooming and traffic ordering and aims at minimizing amplifier…

信息论 · 计算机科学 2017-05-22 Mohammad Hadi , Mohammad Reza Pakravan

LoRa networks are pivotally enabling Long Range connectivity to low-cost and power-constrained user equipments (UEs) in a wide area, whereas a critical issue is to effectively allocate wireless resources to support potentially massive UEs…

信息论 · 计算机科学 2021-11-08 Jiangbin Lyu , Dan Yu , Liqun Fu

Economical and environmental concerns necessitate research on designing energy-efficient optical access network especially Ethernet Passive Optical Network (EPON) which is one of the most widely accepted and deployed last-mile access…

网络与互联网体系结构 · 计算机科学 2019-02-12 Sourav Dutta , Dibbendu Roy , Goutam Das

This paper investigates an uplink non-orthogonal multiple access (NOMA)-based mobile-edge computing (MEC) network. Our objective is to minimize the total energy consumption of all users including transmission energy and local computation…

信号处理 · 电气工程与系统科学 2019-02-18 Zhaohui Yang , Jiancao Hou , Mohammad Shikh-Bahaei

Non-orthogonal multiple access (NOMA) technique is important for achieving a high data rate in next-generation wireless communications. A key challenge to fully utilizing the effectiveness of the NOMA technique is the optimization of the…

信息论 · 计算机科学 2024-10-28 Teppei Otsuka , Aohan Li , Hiroki Takesue , Kensuke Inaba , Kazuyuki Aihara , Mikio Hasegawa

This paper studies strategies to optimize the lane configuration of a transportation network for a given set of Origin-Destination demands using a planning macroscopic network flow model. The lane reversal problem is, in general, NP-hard…

最优化与控制 · 数学 2021-07-16 Salomon Wollenstein-Betech , Ioannis Ch. Paschalidis , Christos G. Cassandras

This paper investigates an uplink non-orthogonal multiple access (NOMA)-based mobile-edge computing (MEC) network. Our objective is to minimize a linear combination of the completion time of all users' tasks and the total energy consumption…

信息论 · 计算机科学 2019-08-14 Zhaohui Yang , Cunhua Pan , Jiancao Hou , Mohammad Shikh-Bahaei

Increasing reliability and reducing disruptions in supply networks are of increasing importance; for example, power outages in electricity distribution networks cost \$35-50 billion annually in the US. Motivated by the operational…

最优化与控制 · 数学 2022-10-04 Cyrus Hettle , Swati Gupta , Daniel Molzahn

Resource allocation with quality of service constraints is one of the most challenging problems in elastic optical networks which is normally formulated as an MINLP optimization program. In this paper, we focus on novel properties of…

信息论 · 计算机科学 2017-05-04 Mohammad Hadi , Mohammad Reza Pakravan

The practical limitations and challenges of radio frequency (RF) based communication networks have become increasingly apparent over the past decade, leading researchers to seek new hybrid communication approaches. One promising strategy…

网络与互联网体系结构 · 计算机科学 2017-06-22 Osama Awwad , Ala Al-Fuqaha , Bilal Khan , Ghassen Ben Brahim

The problem of joint power and sub-channel allocation to maximize energy efficiency (EE) and spectral efficiency (SE) simultaneously in in-band full-duplex (IBFD) orthogonal frequency-division multiple access (OFDMA) network is addressed…

信息论 · 计算机科学 2020-03-02 Ata Khalili , Sheyda Zarandi , Mehdi Rasti , Ekram Hossain

With growing popularity, LoRa networks are pivotally enabling Long Range connectivity to low-cost and power-constrained user equipments (UEs). Due to its wide coverage area, a critical issue is to effectively allocate wireless resources to…

信息论 · 计算机科学 2020-09-03 Jiangbin Lyu , Dan Yu , Liqun Fu

Routing, modulation and spectrum allocation in elastic optical networks is a problem aiming at increasing the capacity of the network. Many algorithms such as shortest path algorithm can be used as the routing section of this problem. The…

网络与互联网体系结构 · 计算机科学 2019-09-11 Mehdi Tarhani , Sanjib Sarkar , Morad Khosravi Eghbal , Mehdi Shadaram