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Rapidly increasing demand for high speed data is pushing 6G wireless networks to support larger link scales, lower latency, and higher spectral efficiency. Visible light communications (VLC) is a strong complement to radio frequency (RF)…

Signal Processing · Electrical Eng. & Systems 2025-10-24 Xuesong Wang

Non-orthogonal multiple access (NOMA) has recently received considerable attention as a promising candidate for 5G systems. A key feature of NOMA is that users with better channel conditions have prior information about the messages of the…

Information Theory · Computer Science 2015-03-19 Zhiguo Ding , Mugen Peng , H. V. Poor

Design of energy-efficient access networks has emerged as an important area of research, since access networks consume $80-90\%$ of the overall Internet power consumption. TWDM-PON is envisaged to be one of the widely accepted future access…

Networking and Internet Architecture · Computer Science 2017-08-31 Sourav Dutta , Dibbendu Roy , Chayan Bhar , Goutam Das

We consider a downlink multiuser visible light communications (VLC) network where users randomly change their location and vertical orientation. The non-orthogonal multiple access (NOMA) strategy is adopted to serve multiple users…

Information Theory · Computer Science 2019-02-27 Yavuz Yapici , Ismail Guvenc

In this paper we present a rudimentary model for low-latency anonymous communication systems. Specifically, we study distributed OR algorithm as an abstract of the system. Based on our model, we give several satisfactory lower bounds of…

Distributed, Parallel, and Cluster Computing · Computer Science 2017-11-06 Yufan Zheng

Wide implementation of IEEE 802.11 based networks could lead to deployment of localized wireless data communication environments with a limited number of mobile hosts, called ad hoc networks. Implementation of a proper routing methodology…

Networking and Internet Architecture · Computer Science 2012-02-01 Alok Kumar Jagadev , Binod Kumar Pattanayak , Manoj Kumar Mishra , Manojranjan Nayak

This letter proposes a novel pinching antenna systems (PASS) enabled non-orthogonal multiple access (NOMA) multi-access edge computing (MEC) framework. An optimization problem is formulated to minimize the maximum task delay by optimizing…

Signal Processing · Electrical Eng. & Systems 2026-01-16 Yuan Ai , Xidong Mu , Pengbo Si , Yuanwei Liu

Exploring channel dimensions has been the driving force behind breakthroughs in successive generations of mobile communication systems. In 5G, space division multiple access (SDMA) leveraging massive MIMO has been crucial in enhancing…

Signal Processing · Electrical Eng. & Systems 2025-01-31 Haoyan Liu , Caijian Jie , Min Yang , Chengguang Li

In this paper, we develop a resource allocation technique for a hybrid time division multiple access (TDMA) - non-orthogonal multiple access (NOMA) system with opportunistic time assignment. In particular, the available transmission time is…

Networking and Internet Architecture · Computer Science 2020-03-05 Xinchen Wei , Haitham Al-Obiedollah , Kanapathippillai Cumanan , Miao Zhang , Jie Tang , Wei Wang , Octavia A. Dobre

Economical and environmental concerns necessitate network engineers to focus on energy-efficient access network design. The optical network units (ONUs), being predominantly responsible for the energy consumption of Ethernet Passive Optical…

Networking and Internet Architecture · Computer Science 2018-12-21 Sourav Dutta , Goutam Das

As progressive densification of cells, deployment of Cloud-RAN and \ac{MEC} are coming into reality to support the ultra-low latency with high reliability in 5G and beyond, it generates mesh traffic pattern across fronthaul network. This…

Networking and Internet Architecture · Computer Science 2021-06-02 Sandip Das , Marco Ruffini

We propose a network implementation with enhanced security at the physical layer by means of time-hopping CDMA, supporting cryptographically secure point-to-point and point-to-multipoint communication. In particular, we analyze an active…

Networking and Internet Architecture · Computer Science 2011-02-04 Ortega A. Alfredo , Victor A. Bettachini , José Ignacio Alvarez-Hamelin , Diego F. Grosz

Wireless transmission using non-contiguous chunks of spectrum is becoming increasingly important due to a variety of scenarios such as: secondary users avoiding incumbent users in TV white space; anticipated spectrum sharing between…

Networking and Internet Architecture · Computer Science 2016-02-16 Muhammad Nazmul Islam , Narayan B. Mandayam , Sastry Kompella , Ivan Seskar

We propose a novel multiple-access technique to overcome the shortcomings of the current proposals for the future releases of Long-Term Evolution (LTE). We provide a unified radio access system that efficiently and flexibly integrates both…

Information Theory · Computer Science 2016-09-16 Nassar Ksairi , Stefano Tomasin , Mérouane Debbah

In this paper, the performance and system complexity of the candidate multiple access (MA) techniques for the next generation of cellular systems, namely, non-orthogonal multiple access (NOMA) (in this paper, we consider power domain MA as…

Information Theory · Computer Science 2017-02-07 Mohammad. Moltafet , Nader. Mokari , Mohammad R. Javan , Paiez. Azmi

We consider downlink OFDMA in which users are imposed with different proportional-rate constraints, and a base station would like to maximise user rate over subcarrier assignment (SA) and power allocation (PA). To attain the objective, we…

Information Theory · Computer Science 2017-07-24 Juthatip Wisanmongkol , Wiroonsak Santipach

We propose and model an optical communication scheme for short distance datacom links based on the distribution of information across a wide comb spectrum. This modulation format, orthogonal delay division multiplexing, allows the…

Optics · Physics 2023-10-27 Andrea Zazzi , Jeremy Witzens

Efficient medium access control (MAC) is critical for enabling low-latency and reliable communication in industrial Machine-to-Machine (M2M) net-works, where timely data delivery is essential for seamless operation. The presence of…

Signal Processing · Electrical Eng. & Systems 2025-10-24 Anwar Ahmed Khan , Indrakshi Dey

This paper presents an analytical framework for downlink pinching antenna systems (PASS) employing waveguide division multiple access (WDMA) and non-orthogonal multiple access (NOMA). A unified channel model is developed to capture antenna…

Signal Processing · Electrical Eng. & Systems 2026-05-18 Han Zhang , Bingxin Zhang , Yizhe Zhao , Kun Yang

With the vision of deployment of massive Internet-of-Things (IoTs) in 5G network, existing 4G network and protocols are inefficient to handle sporadic IoT traffic with requirements of low-latency, low control overhead and low power. To…

Networking and Internet Architecture · Computer Science 2017-05-22 Siddarth Mathur , Shweta S. Sagari , Syed Obaid Amin , Ravishankar Ravindran , Dola Saha , Ivan Seskar , Dipankar Raychaudhuri , Guoqiang Wang