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Channel Multiplexing in Wireless Terahertz Communications Using Orbital Angular Momentum States [article]

Kathirvel Nallappan, Hichem Guerboukha, Mohamed Seghilani, José Azana, Chahé Nerguizian, Maksim Skorobogatiy
2017 arXiv   pre-print
Finally, we present the experimental setup and theoretical simulation on the multiplexing and de-multiplexing of several different OAM states for applications in wireless terahertz communication.  ...  (THz) wireless communications.  ...  The OAM beam divergence is theoretically calculated in order to use the patterned phase plate in the real-time wireless communication for multiplexing and de-multiplexing respectively.  ... 
arXiv:1708.08005v1 fatcat:rlk5vgbyrrc5vmaoyeii4qy76y


Feng Zheng, Yijian Chen, Siwei Ji, Gaoming Duan
2020 Electromagnetic Waves  
The OAM vortex wave/beam has different topological charges, which are orthogonal to each other. It provides a new way for multiplexing in wireless communications.  ...  In Section 4, the latest development and some research status in OAM wireless communication are combed. In Section 5, the relationship between OAM and MIMO is addressed.  ...  With the introduction of OAM, there is no need to use a high number of unrelated paths for spatial multiplexing in wireless communication.  ... 
doi:10.2528/pier20091104 fatcat:zaproajxofel3lh4mcur5jw25q

Free Space Optical Communication: Challenges and Mitigation Techniques [article]

Hemani Kaushal, Georges Kaddoum
2015 arXiv   pre-print
Out of these three effects, the atmospheric turbulence is a major challenge that may lead to serious degradation in the bit error rate (BER) performance of the system and make the communication link infeasible  ...  It also presents a recently developed technique in FSO system using orbital angular momentum to combat the effect of atmospheric turbulence.  ...  For de-multiplexing OAM beams, an inverse of azimuthal phase term exp [i (−l n ) θ] is used and received de-multiplexed beam is then given as U Rx (r, θ, t) = exp [i (−l n ) θ]· N m=1 S m (t)·A m (r)·exp  ... 
arXiv:1506.04836v1 fatcat:gvzq3wip2rexdnybi3n3ww4tfm

Retrofitting FSO Systems in Existing RF Infrastructure: A Non-Zero Sum Game Technology [article]

Abderrahmen Trichili, Amr Ragheb, Dmitrii Briantcev, Maged A. Esmail, Majid Altamimi, Islam Ashry, Boon S. Ooi, Saleh Alshebeili, Mohamed-Slim Alouini
2021 arXiv   pre-print
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 sub-bands; ultraviolet, visible, and infrared.  ...  The orthogonality between OAM beams enabled an extra multiplexing scheme in optical communication [119] . OAM multiplexing is possible in FSO, as well as in radio communication [120] .  ... 
arXiv:2105.07543v1 fatcat:jhy7r6aocba2lmiw7gk7qsxesq

Petahertz communication: harmonizing optical spectra for wireless communications

Zhengyuan Xu, Weijie Liu, Zhaocheng Wang, Lajos Hanzo
2021 Digital Communications and Networks  
Petahertz communication: harmonizing optical spectra for wireless communications 1 2021Published by Elsevier Ltd.  ...  A set of OAM beams are multiplexed and transmitted via the PHz channel.  ...  In MDMA, a set of OAM beams possessing different orthogonal OAM modes are multiplexed for transmitting multiple data streams along the same beam axis direction.  ... 
doi:10.1016/j.dcan.2021.08.001 fatcat:emtyc6zsibgm5n7wf4643gornq

TeraHertz Band Communication: An Old Problem Revisited and Research Directions for the Next Decade [article]

Ian F. Akyildiz, Chong Han, Zhifeng Hu, Shuai Nie, Josep M. Jornet
2022 arXiv   pre-print
The key aspects presented in this paper will enable THz communications as a pillar of 6G and Beyond wireless systems in the next decade.  ...  Terahertz (THz) band communications are envisioned as a key technology for 6G and Beyond. As a fundamental wireless infrastructure, THz communication can boost abundant promising applications.  ...  GHz Wireless Links [283] 300 GHz Quadrature Phase Shift 2019 University of Lille TMIC in the sub-300 GHz range Keying and QAM16 56 Gbps Wireless Data Links Using Silicon Photonics Photodiodes [274] 120  ... 
arXiv:2112.13187v3 fatcat:irt2ivosjncslbenh2fl4kwi54

Historical Perspective of Free Space Optical Communications: from the early dates to today's developments

Arockia Raj, Arun Majumdar
2019 IET Communications  
A brief description of evaluations of communication technologies from the ancient Greece to today's mature telecommunication fields is discussed in this review paper.  ...  Deep space optical communication systems and next generation FSO wireless terrestrial/global network architecture are summarised.  ...  and directionality (reduced multipath effects).  ... 
doi:10.1049/iet-com.2019.0051 fatcat:thfgmrmltbht3nryghtpoogpgm

White Paper on Broadband Connectivity in 6G [article]

Nandana Rajatheva, Italo Atzeni, Emil Bjornson, Andre Bourdoux, Stefano Buzzi, Jean-Baptiste Dore, Serhat Erkucuk, Manuel Fuentes, Ke Guan, Yuzhou Hu, Xiaojing Huang, Jari Hulkkonen (+13 others)
2020 arXiv   pre-print
The latter path will lead to THz communications complemented by visible light communications in specific scenarios.  ...  This white paper explores the road to implementing broadband connectivity in future 6G wireless systems.  ...  It is part of a series of twelve 6G white papers to be published in their final format in June 2020.  ... 
arXiv:2004.14247v1 fatcat:doom4rvlf5aafmtwpdxbyu6dke

Applications and challenges of Reconfigurable Intelligent Surface for 6G networks (Original published in Chinese) [article]

Yajun Zhao, Mengnan Jian
2021 arXiv   pre-print
This paper first introduces the main aspects of RIS enabled wireless communication network from a new perspective, and then focuses on the key challenges faced by the introduction of RIS.  ...  RIS can build a smart radio environment through its ability to regulate radio wave transmission in a flexible way.  ...  In recent years, AI is used to enhance the traditional wireless communication system.  ... 
arXiv:2108.13164v1 fatcat:bzzsd4lhmzdgthp7lren2boywi

6G Wireless Systems: Vision, Requirements, Challenges, Insights, and Opportunities

Harsh Tataria, Mansoor Shafi, Andreas F. Molisch, Mischa Dohler, Henrik Sjoland, Fredrik Tufvesson
2021 Proceedings of the IEEE  
This article aims to provide a holistic top-down view of sixth-generation wireless system design and proposes fundamental changes that are required in the core networks of the future.  ...  While fifth-generation (5G) systems are becoming a commercial reality, there is already significant interest in systems beyond 5G, which we refer to as the sixth generation (6G) of wireless systems.  ...  OAM is especially suitable for line-of-sight (LOS) propagation, such as in data centers and for wireless backhaul, and is limited in range since their underlying principle for multiplexing only works in  ... 
doi:10.1109/jproc.2021.3061701 fatcat:4z4huyhnqbbsnc4qc4t5jod43u

6G Wireless Systems: Vision, Requirements, Challenges, Insights, and Opportunities [article]

Harsh Tataria and Mansoor Shafi and Andreas F. Molisch and Mischa Dohler and Henrik Sjöland and Fredrik Tufvesson
2021 arXiv   pre-print
While fifth-generation (5G) systems are becoming a commercial reality, there is already significant interest in systems beyond 5G, which we refer to as the sixth-generation (6G) of wireless systems.  ...  As such, the 6G eco-system will feature a diverse range of frequency bands, ranging from below 6 GHz up to 1 THz.  ...  OAM is especially suitable for line-of-sight (LOS) propagation, such as in data centers, and for wireless backhaul, and are limited in range since due their underlying principle for multiplexing only works  ... 
arXiv:2008.03213v2 fatcat:whhsaotwszcjlfdx4nwc2qpj6y

2020 Index IEEE Photonics Journal Vol. 12

2020 IEEE Photonics Journal  
Sankoh, A., +, JPHOT Oct. 2020 7905311 Phase Alignment With Minimum Complexity for Equal Gain Combining in Multi-Aperture Free-Space Digital Coherent Optical Communication Receivers.  ...  ., +, JPHOT Aug. 2020 7903416 Phase Alignment With Minimum Complexity for Equal Gain Combining in Multi-Aperture Free-Space Digital Coherent Optical Communication Receivers.  ...  Light interferometry Fourier and Inverse Fourier Transform Model for Delayed Self-interferometry System. Zhang  ... 
doi:10.1109/jphot.2021.3050278 fatcat:lbfms2rznnhurdanu5rfora5pe

6G Technology Overview - One6G White Paper [article]

One6G Association
2022 Zenodo  
For each enabling technology, we first give the background on how and why the technology is relevant to 6G, backed up by a number of relevant use cases.  ...  After that, we describe the technology in detail, outline the key problems and difficulties, and give a comprehensive overview of the state of the art in that technology. 6G is, however, not limited to  ...  The four application scenarios are intra-device communication, close proximity communication, wireless links in data centers, and wireless backhaul/fronthaul links [6] : • Intra-device communication  ... 
doi:10.5281/zenodo.6630705 fatcat:rghtxgovubc5zartbe2qx4ekvm

Non-Coherent and Backscatter Communications: Enabling Ultra-Massive Connectivity in the Era Beyond 5G [article]

Syed Junaid Nawaz, Shree Krishna Sharma, Babar Mansoor, Mohmammad N. Patwary, Noor M. Khan
2020 arXiv   pre-print
Various revolutionary technologies and innovative services are offered in 5G networks, which, along with many principal advantages, are anticipated to bring a boom in the number of connected wireless devices  ...  and the types of use-cases that may cause the scarcity of network resources.  ...  Acknowledgement The first and third authors would like to acknowledge the partial financial support by HEC funded project 21-2180 (SRGP-R&D-HEC-19).  ... 
arXiv:2005.10937v3 fatcat:nsyufug2dbbvzeribg4bgymyfa

D3.1 Report on baseband and antenna concepts

Georgia Ntouni
2020 Zenodo  
Thus, Deliverable 3.1 briefly presents the state-of-the-art in D-band communication and metasurfaces and includes the description of preliminary concepts and approaches as well as their performance assessment  ...  The main objective of this deliverable is to explore concepts and designs for the development of prototypes that will be utilized in ARIADNE's demonstrators.  ...  Sub-THz systems have a dominant LoS component and the multipath effect is not as severe. Thus, probability of frequency-selectivity is quite low and communication takes place under LoS conditions.  ... 
doi:10.5281/zenodo.4311178 fatcat:t7ybkcdvirfzhddbd4klmyiytm
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