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Data centers based on Passive Optical Networks (PONs) can provide high capacity, low cost, scalability, elasticity and high energy-efficiency. This paper introduces the use of WDM-TDM multiple access in a PON-based data center that offers…

Networking and Internet Architecture · Computer Science 2023-05-31 Mohammed Alharthi , Sanaa H. Mohamed , Taisir E. H. El-Gorashi , Jaafar M. H. Elmirghani

This paper proposes a point-to-point passive optical network (P2P-PON) architecture as an energy-efficient and low-latency backhaul solution for visible light communication (VLC)-enabled indoor fog computing systems. The proposed…

Networking and Internet Architecture · Computer Science 2026-03-04 Wafaa B. M. Fadlelmula , Sanaa Hamid Mohamed , Taisir E. H. El-Gorashi , Jaafar M. H. Elmirghani

Virtualized Passive Optical Networks (vPONs) offer a promising solution for modern access networks, bringing enhanced flexibility, reduced capital expenditures (CapEx), and support for multi-tenancy. By decoupling network functions from…

Networking and Internet Architecture · Computer Science 2025-06-17 Arijeet Ganguli , Marco Ruffini

We experimentally demonstrate a novel optical physical-layer network coding (PNC) scheme over time-division multiplexing (TDM) passive optical network (PON). Full-duplex error-free communications between optical network units (ONUs) at 2.5…

Networking and Internet Architecture · Computer Science 2015-06-05 Qike Wang , Kam-Hon Tse , Lian-Kuan Chen , Soung-Chang Liew

The provision of both wireless and wired services in the optical access domain will be an important function for future passive optical networks (PON). With the emergence of 5th generation (5G) mobile communications, a move toward a dense…

Information Theory · Computer Science 2017-03-07 Colm Browning , Arman Farhang , Arsalan Saljoghei , Nicola Marchetti , Vidak Vujicic , Linda Doyle , Liam Barry

Non-orthogonal multiple access (NoMA) as an efficient way of radio resource sharing can root back to the network information theory. For generations of wireless communication systems design, orthogonal multiple access (OMA) schemes in time,…

Token communications is an emerging generative semantic communication concept that reduces transmission rates by using context and transformer-based token processing, with tokens serving as universal semantic units. In this paper, we…

Information Theory · Computer Science 2025-07-11 Li Qiao , Mahdi Boloursaz Mashhadi , Zhen Gao , Deniz Gündüz

The emergence of diverse network applications demands more flexible and responsive resource allocation for networks. Network slicing is a key enabling technology that provides each network service with a tailored set of network resources to…

Networking and Internet Architecture · Computer Science 2022-01-20 Genya Ishigaki , Siddartha Devic , Riti Gour , Jason P. Jue

The fifth-generation of mobile radio technologies is expected to be agile, flexible, and scalable while provisioning ultra-reliable and low-latency communication (uRLLC), enhanced mobile broadband (eMBB), and massive machine type…

Networking and Internet Architecture · Computer Science 2022-05-10 Sourav Mondal , Marco Ruffini

The rapid evolution of communication technologies such as 5G and beyond, rely on optical networks to support the challenging and ambitious requirements that include both capacity and reliability. This chapter begins by giving an overview of…

Networking and Internet Architecture · Computer Science 2023-02-16 Carmen Mas-Machuca , Lena Wosinska , Marco Ruffini , Jiajia Chen

In this paper, we propose incorporating Optical Wireless Communication (OWC) and Passive Optical Network (PON) technologies into next generation spine-and-leaf Data Centre Networks (DCNs). In this work, OWC systems are used to connect the…

Networking and Internet Architecture · Computer Science 2024-04-23 Abrar S. Alhazmi , Sanaa H. Mohamed , Ahmad Qidan , T. E. H. El-Gorashi , Jaafar M. H. Elmirghani

Multiple access techniques are vital for 5G and beyond. While Orthogonal Frequency Division Multiple Access (OFDMA) is standard, its high peak-to-average power ratio (PAPR) reduces energy efficiency in uplink transmissions. This paper…

Signal Processing · Electrical Eng. & Systems 2026-04-13 Gokce Hacioglu , Serkan Vela

Token communications (TokCom) is an emerging generative semantic communication concept that reduces transmission rates by using context and multimodal large language model (MLLM)-based token processing, with tokens serving as universal…

Information Theory · Computer Science 2025-09-11 Li Qiao , Mahdi Boloursaz Mashhadi , Zhen Gao , Robert Schober , Deniz Gündüz

In this paper, we proposed a novel OTSS-assisted optical network architecture for smart-grid communication networks, which has unique requirements for low-latency connections. Illustrative results show that, OTSS can provide extremely…

Networking and Internet Architecture · Computer Science 2018-02-26 Zhizhen Zhong , Nan Hua , Zhu Liu , Wenjing Li , Yanhe Li , Xiaoping Zheng

This paper proposes a novel scheme which can efficiently reduce the energy consumption of Optical Line Terminals (OLTs) in Time Division Multiplexing (TDM) Passive Optical Networks (PONs) such as EPON and GPON. Currently, OLTs consume a…

Networking and Internet Architecture · Computer Science 2015-09-22 Mina Taheri , Nirwan Ansari

With the advent of the 6G mobile communication network era, the existing non-orthogonal multiple-access (NOMA) technology faces the challenge of high successive interference in multi-user scenarios, which limits its ability to support more…

Emerging Technologies · Computer Science 2025-02-25 Zihan Li , Youzhi Li , Chenyu Liuand Yuhao Lian

In this paper, we propose an energy efficient passive optical network (PON) architecture for backhaul connectivity in indoor visible light communication (VLC) systems. The proposed network is used to support a fog computing architecture…

Networking and Internet Architecture · Computer Science 2023-04-11 Wafaa B. M. Fadlelmula , Sanaa H. Mohamed , Taisir E. H. El-Gorashi , Jaafar M. H. Elmirghani

The main limitation of visible light communication (VLC) is the narrow modulation bandwidth, which reduces the achievable data rates. In this paper, we apply the non-orthogonal multiple access (NOMA) scheme to enhance the achievable…

Information Theory · Computer Science 2015-12-01 Hanaa Marshoud , Vasileios M. Kapinas , George K. Karagiannidis , Sami Muhaidat

In this paper, an energy efficient passive optical network (PON) architecture is proposed for backhaul connectivity in indoor visible light communication (VLC) systems. The proposed network is used to support a fog computing architecture…

Networking and Internet Architecture · Computer Science 2022-03-23 Wafaa B. M. Fadlelmula , Sanaa H. Mohamed , Taisir E. H. El-Gorashi , Jaafar M. H. Elmirghani

Building on the Ethernet Passive Optical Network (EPON) and Gigabit PON (GPON) standards, Next-Generation (NG) PONs (i) provide increased data rates, split ratios, wavelengths counts, and fiber lengths, as well as (ii) allow for all-optical…

Information Theory · Computer Science 2013-11-06 Frank Aurzada , Michael Scheutzow , Martin Reisslein , Navid Ghazisaidi , Martin Maier