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Hybrid light fidelity (LiFi) and wireless fidelity (WiFi) indoor networks has been envisioned as a promising technology to alleviate radio frequency spectrum crunch to accommodate the ever-increasing data rate demand in indoor scenarios.…

Machine Learning · Computer Science 2025-03-04 Peijun Hou , Nan Cen

The potential of Wi-Fi backscatter communications systems is immense, yet challenges such as signal instability and energy constraints impose performance limits. This paper introduces FlexScatter, a Wi-Fi backscatter system using a designed…

Networking and Internet Architecture · Computer Science 2025-03-10 Xin He , Jingwen Xie , Aohua Zhang , Weiwei Jiang , Yujun Zhu , Tad Matsumoto

The integration of electromagnetic metasurfaces into wireless communications enables intelligent control of the propagation environment. Recently, flexible intelligent metasurfaces (FIMs) have evolved beyond conventional reconfigurable…

Signal Processing · Electrical Eng. & Systems 2026-01-23 Ling He , Vaibhav Kumar , Anastasios Papazafeiropoulos , Miaowen Wen , Le-Nam Tran , Marwa Chafii

Wi-Fi provides cost-effective data capacity at hotspots in conjunction with broadband cellular networks. The hotspots are required to capture a large number of users and provide high data rates. Data rates, over the Wi-Fi interface, are…

Networking and Internet Architecture · Computer Science 2016-11-18 Jonathan Ling , Satish Kanugovi , Subramanian Vasudevan , A Krishna Pramod

In the past few years, the demand for high data rate services has increased dramatically. The congestion in the radio frequency (RF) spectrum (3 kHz ~ 300 GHz) is expected to limit the growth of future wireless systems unless new parts of…

Signal Processing · Electrical Eng. & Systems 2019-01-01 Osama Alsulami , Ahmed Taha Hussein , Mohammed T. Alresheedi , Jaafar M. H. Elmirghani

Progress in optical wireless communication (OWC) has unleashed the potential to transmit data in an ultra-fast manner without incurring large investments and bulk infrastructure. OWC includes wireless data transmissions in three optical…

Wireless Gigabit (WiGig) access points (APs) using 60 GHz unlicensed frequency band are considered as key enablers for future Gbps wireless local area networks (WLANs). Exhaustive search analog beamforming (BF) is mainly used with WiGig…

Networking and Internet Architecture · Computer Science 2016-11-15 Ehab Mahmoud Mohamed , Hideyuki Kusano , Kei Sakaguchi , Seiichi Sampei

Current Gigabit-class passive optical networks (PONs) evolve into next-generation PONs, whereby high-speed 10+ Gb/s time division multiplexing (TDM) and long-reach wavelength-broadcasting/routing wavelength division multiplexing (WDM) PONs…

Information Theory · Computer Science 2013-11-06 Frank Aurzada , Martin Lévesque , Martin Maier , Martin Reisslein

Terrestrial free-space optical (FSO) links are an ideal candidate to extend the bandwidth continuum offered by fiber networks, yet at the expense of unfavorable cost credentials due to highly complex opto-mechanical setups. As a response to…

Optics · Physics 2025-03-24 Florian Honz , Bernhard Schrenk

Wireless Local Area Networks (WLANs), known as Wi-Fi, have become an essential service in university environments that helps staff, students and guests to access connectivity to the Internet from their mobile devices. Apart from the…

Networking and Internet Architecture · Computer Science 2020-04-06 Farhana Binte Kamrul Easha , Robert Abbas , Matthew Daley

This paper considers a scenario in which a source-destination pair needs to establish a confidential connection against an external eavesdropper, aided by the interference generated by another source-destination pair that exchanges public…

Information Theory · Computer Science 2016-12-21 Lingxiang Li , Athina P. Petropulu , Zhi Chen , Jun Fang

Network operators are looking towards LTE License Assisted Access (LAA) as a means of extending capacity by offloading traffic to unlicensed bands. However, operation in these bands requires abiding to certain coexistence rules in terms of…

Networking and Internet Architecture · Computer Science 2021-03-25 Jacek Wszołek , Szymon Ludyga , Wojciech Anzel , Szymon Szott

In recent years, network coding has emerged as an innovative method that helps a wireless network approach its maximum capacity, by combining multiple unicasts in one broadcast. However, the majority of research conducted in this area is…

Networking and Internet Architecture · Computer Science 2018-01-09 Somayeh Kafaie , Yuanzhu Chen , Mohamed Hossam Ahmed , Octavia A. Dobre

New network architectures, such as the Internet of Things (IoT), 5G, and next-generation (NextG) cellular systems, put forward emerging challenges to the design of future wireless networks toward ultra-high data rate, massive data…

Networking and Internet Architecture · Computer Science 2023-06-13 Jiahao Xue , Zhe Qu , Shangqing Zhao , Yao Liu , Zhuo Lu

In this paper, we consider a multiple-input-multiple-output optical wireless communication (MIMO-OWC) system in the presence of log-normal fading. In this scenario, a general criterion for the design of full-diversity space code (FDSC) with…

Information Theory · Computer Science 2015-09-25 Yan-Yu Zhang , Hong-Yi Yu , Jian-Kang Zhang , Yi-Jun Zhu , Jin-Long Wang , Tao Wang

We design and implement a network-coding-enabled reliability architecture for next generation wireless networks. Our network coding (NC) architecture uses a flexible thread-based design, with each encoder-decoder instance applying…

Networking and Internet Architecture · Computer Science 2013-08-05 S. Teerapittayanon , K. Fouli , M. Medard , M. -J. Montpetit , X. Shi , I. Seskar , A. Gosain

Superimposed signals are anticipated to improve wireless spectrum efficiency to support the ever-growing IoT applications. Implementing the superimposed signal demands on ideally aligned signals in both the time and frequency domains. Prior…

Signal Processing · Electrical Eng. & Systems 2019-07-29 Wen Cui , Chen Liu , Lin Cai , Jianping Pan

Indoor localization has recently witnessed an increase in interest, due to the potential wide range of services it can provide by leveraging Internet of Things (IoT), and ubiquitous connectivity. Different techniques, wireless technologies…

Networking and Internet Architecture · Computer Science 2019-01-18 Faheem Zafari , Athanasios Gkelias , Kin Leung

One of the main problems in mobile communication systems is the degradation of Radio Frequency (RF) connection when mobile user is far from base station. One way to solve this problem is to increase the transmitter power, but the mobile…

Signal Processing · Electrical Eng. & Systems 2018-11-21 Mohammad Ali Amirabadi

In a bi-directional relay channel, two nodes wish to exchange independent messages over a shared wireless half-duplex channel with the help of a relay. In this paper, we derive achievable rate regions for four new half-duplex protocols and…

Information Theory · Computer Science 2009-05-16 Sang Joon Kim , Natasha Devroye , Patrick Mitran , Vahid Tarokh