Results 11 to 20 of about 21,660 (155)

Deep Reinforcement Learning Based Joint Allocation Scheme in a TWDM-PON-Based mMIMO Fronthaul Network

IEEE Photonics Journal
In next-generation centralized or cloud radio access networks (C-RANs), time and wavelength division multiplexed passive optical network (TWDM-PON) has been well recognized as a promising candidate to build the mobile fronthaul. Considering the stringent
Yuansen Cheng, Yingjie Shao, Shifeng Ding, Chun-Kit Chan   +3 more
doaj   +2 more sources

EAM modulated DBR laser array for TWDM-PON applications [PDF]

2016 IEEE Photonics Conference (IPC), 2016
4 Channel DBR laser arrays are fabricated for use in optical line terminals of TWDM-PON systems. These combine 1.4Q InGaAsP material in the DBR with EAMs using the identical active layer design. A tuning range ~10 nm and extinction ratio of >27 dB are measured.
Xu, J. J., Han, L. S., Hou, L.P., Liang, S., Marsh, J.H., Huang, Y. G., Zhu, H. L.   +6 more
openaire   +2 more sources

Greedy Graph Coloring and Hungarian Algorithms for Resource Scheduling in TWDM-PON

IEEE Access
The time and wavelength division multiplexing passive optical network (TWDM-PON) allows numerous users to share a single optical fiber and wavelength. In TWDM-PON, the optical network unit (ONU) has different upstream and downstream user traffic to serve
Sandra Arnaout, Md Arifur Rahman, Md Munjure Mowla, Slawomir Hausman, Piotr Korbel   +4 more
doaj   +2 more sources

Chirp-Compensated DBR Lasers for TWDM-PON Applications

IEEE Photonics Journal, 2015
We propose a novel chirp compensation scheme for directly modulated three-section distributed Bragg reflector (3s-DBR) lasers in applications of the time- and wavelength-division multiplexed passive optical network systems.
Hang Zhao, Sheng Hu, Jialin Zhao, Yao Zhu, Yonglin Yu, Liam P. Barry   +5 more
doaj   +2 more sources

Sleep-aware wavelength and bandwidth assignment scheme for TWDM PON. [PDF]

Opt Quantum Electron, 2021
The energy efficiency and delay performance of PON are two inversely related phenomena. Higher sleep time of the Optical Network Units (ONUs) results in higher upstream (US) delays due to increased traffic queues during the ONU Asleep state. Although an efficient dynamic bandwidth and wavelength assignment (DWBA) scheme can decrease US delays by ...
Butt RA, Faheem M, Ashraf MW, Arfeen A, Memon KA, Khawaja A.   +5 more
europepmc   +5 more sources

Energy efficient DBA algorithms for TWDM-PONs [PDF]

2015 17th International Conference on Transparent Optical Networks (ICTON), 2015
Energy efficiency is of a vital significance in the design of next generation time and wavelength division multiplexed passive optical networks (TWDM-PONs). In this paper, we first review strategies to save energy in TWDM-PONs using the state-of-the-art dynamic bandwidth allocation (DBA) algorithms.
Dixit, Abhishek, Lannoo, Bart, Colle, Didier, Pickavet, Mario, Demeester, Piet   +4 more
openaire   +2 more sources

Fiber- and FSO-Protected Connections for Long-Reach TWDM Access Architecture With Fault Protection

IEEE Access, 2020
In this paper, we propose a long-reach star-ring-based timeand wavelength-divisionmultiplexing passive optical network (TWDM-PON) by using fiberand free space optical (FSO)-protected architecture against fiber breakpoint.
Chien-Hung Yeh, Wei-Hung Hsu, Bo-Yin Wang, Wei-Yao You, Jhao-Ren Chen, Chi-Wai Chow, Shien-Kuei Liaw   +6 more
doaj   +1 more source

Flexible Access Network Multi-Tenancy Using NFV/SDN in TWDM-PON

IEEE Access, 2023
Over the past decade, network operators worldwide have regarded passive optical networks (PONs) as a successful access network system and the preferred technology for fiber-to-the-home/building/curb/distribution-point (FTTx) architecture.
Andrew Fernando Pakpahan, I-Shyan Hwang
doaj   +1 more source

Wavelength and Bandwidth Allocation for Mobile Fronthaul in TWDM-PON [PDF]

IEEE Transactions on Communications, 2019
Time- and wavelength- division multiplexed passive optical network (TWDM-PON) has attracted considerable attention for the next generation optical access systems. Among potential applications of TWDM-PON, a major application is the support of mobile fronthaul streams between radio units (RUs) and distributed units (DUs) in the centralized radio access ...
Yu Nakayama, Daisuke Hisano
openaire   +1 more source

Compatibility between coherent reflective burst-mode PON and TWDM-PON physical layers [PDF]

, 2014
We discuss the compatibility between reflective PON architectures and the recently defined ITU-T G.989.1 TWDM-PON. Focusing on the upstream, we experimentally demonstrate that, by using burst-mode coherent detection at OLT, reflective PON can achieve the
Ferrero, Valter, F. Forghieri, S. Straullu, Straullu, S., Forghieri, F., Bosco, Gabriella, Gaudino, Roberto   +6 more
core   +1 more source