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6G Wireless Communications: Vision and Potential Techniques

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TLDR
A number of key technical challenges as well as the potential solutions associated with 6G, including physical-layer transmission techniques, network designs, security approaches, and testbed developments are outlined.
Abstract
With the fast development of smart terminals and emerging new applications (e.g., real-time and interactive services), wireless data traffic has drastically increased, and current cellular networks (even the forthcoming 5G) cannot completely match the quickly rising technical requirements. To meet the coming challenges, the sixth generation (6G) mobile network is expected to cast the high technical standard of new spectrum and energy-efficient transmission techniques. In this article, we sketch the potential requirements and present an overview of the latest research on the promising techniques evolving to 6G, which have recently attracted considerable attention. Moreover, we outline a number of key technical challenges as well as the potential solutions associated with 6G, including physical-layer transmission techniques, network designs, security approaches, and testbed developments.

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Journal ArticleDOI

Towards 6G wireless communication networks: vision, enabling technologies, and new paradigm shifts

TL;DR: 6G with additional technical requirements beyond those of 5G will enable faster and further communications to the extent that the boundary between physical and cyber worlds disappears.
Journal ArticleDOI

Holographic MIMO Surfaces for 6G Wireless Networks: Opportunities, Challenges, and Trends

TL;DR: An overview of HMIMOS communications including the available hardware architectures for reconfiguring such surfaces are provided, and the opportunities and key challenges in designingHMIMOS-enabled wireless communications are highlighted.
Journal ArticleDOI

6G and Beyond: The Future of Wireless Communications Systems

TL;DR: Significant technological breakthroughs to achieve connectivity goals within 6G include: a network operating at the THz band with much wider spectrum resources, intelligent communication environments that enable a wireless propagation environment with active signal transmission and reception, and pervasive artificial intelligence.
Journal ArticleDOI

A Speculative Study on 6G

TL;DR: The vision of 5G is extended to more ambitious scenarios in a more distant future and speculates on the visionary technologies that could provide the step changes needed for enabling 6G.
Journal ArticleDOI

6G Wireless Communication Systems: Applications, Requirements, Technologies, Challenges, and Research Directions

TL;DR: In this article, the authors present the vision of future 6G wireless communication and its network architecture and also describe potential applications with 6G communication requirements and possible technologies, as well as potential challenges and research directions for achieving this goal.
References
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Journal ArticleDOI

What Will 5G Be

TL;DR: This paper discusses all of these topics, identifying key challenges for future research and preliminary 5G standardization activities, while providing a comprehensive overview of the current literature, and in particular of the papers appearing in this special issue.
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Machine Learning Paradigms for Next-Generation Wireless Networks

TL;DR: The goal is to assist the readers in refining the motivation, problem formulation, and methodology of powerful machine learning algorithms in the context of future networks in order to tap into hitherto unexplored applications and services.
Journal ArticleDOI

A Comprehensive Survey of Recent Advancements in Molecular Communication

TL;DR: A comprehensive survey of molecular communication (MC) through a communication engineering lens is provided in this paper, which includes different components of the MC transmitter and receiver, as well as the propagation and transport mechanisms.
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A Survey of Physical Layer Security Techniques for 5G Wireless Networks and Challenges Ahead

TL;DR: This paper provides a latest survey of the physical layer security research on various promising 5G technologies, includingPhysical layer security coding, massive multiple-input multiple-output, millimeter wave communications, heterogeneous networks, non-orthogonal multiple access, full duplex technology, and so on.
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Combating the Distance Problem in the Millimeter Wave and Terahertz Frequency Bands

TL;DR: In this article, four directions to tackle the crucial problem of distance limitation are investigated, namely, a distance-aware physical layer design, ultra-massive MIMO communication, reflectarrays, and intelligent surfaces.
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