Non-Coherent and Backscatter Communications: Enabling Ultra-Massive Connectivity in 6G Wireless Networks

Nawaz, Syed Junaid; Sharma, Shree Krishna; Mansoor, Babar; Patwary, Mohammad; Khan, Noor M.

doi:10.1109/access.2021.3061499

Cited by 65 publications

(34 citation statements)

References 244 publications

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“…Non-coherent communication can be considered as a promising enabler to meet up these requirements. Moreover, non-coherent backscatter communication can provide optimized resource utilization and service enhancement in network devices [69].…”

Section: Fundamental Enabling Technologies Of 6gmentioning

confidence: 99%

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

Chowdhury

Shahjalal

Ahmed

et al. 2020

IEEE Open J. Commun. Soc.

927

445

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The demand for wireless connectivity has grown exponentially over the last few decades. Fifth-generation (5G) communications, with far more features than fourth-generation communications, will soon be deployed worldwide. A new paradigm of wireless communication, the sixth-generation (6G) system, with the full support of artificial intelligence, is expected to be implemented between 2027 and 2030. Beyond 5G, some fundamental issues that need to be addressed are higher system capacity, higher data rate, lower latency, higher security, and improved quality of service (QoS) compared to the 5G system. This paper presents the vision of future 6G wireless communication and its network architecture. This article describes emerging technologies such as artificial intelligence, terahertz communications, wireless optical technology, free-space optical network, blockchain, three-dimensional networking, quantum communications, unmanned aerial vehicles, cellfree communications, integration of wireless information and energy transfer, integrated sensing and communication, integrated accessbackhaul networks, dynamic network slicing, holographic beamforming, backscatter communication, intelligent reflecting surface, proactive caching, and big data analytics that can assist the 6G architecture development in guaranteeing the QoS. Besides, expected applications with 6G communication requirements and possible technologies are presented. We also describe potential challenges and research directions for achieving this goal.

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Section: Fundamental Enabling Technologies Of 6gmentioning

confidence: 99%

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

Chowdhury

Shahjalal

Ahmed

et al. 2020

IEEE Open J. Commun. Soc.

927

445

View full text Add to dashboard Cite

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“…In this regard, Table I summarizes the focus and content of the main surveys and overviews of RF-EH in the last six years. Readers may refer to [9], [16], [18], [22], and [29] for an overview of ambient RF EH, to [23], [28], and [33]- [35] for revisions of future ambient backscatter communications, and to [6], [7], [16], [17], [19]- [21], [23]- [27], and [30]- [32] to explore RF-WET and wireless information transmission (WIT) integration issues. Meanwhile, the focus in this work is on dedicated RF WET, hereinafter referred just as WET, which is the most critical building block in practical RF-EH communication systems.…”

Section: B Scope and Contributions Of This Workmentioning

confidence: 99%

“…Nowadays, however, the stringent performance requirements of beyond 5G and 6G systems challenge the design of practical CSI-limited schemes [36]. Readers are encouraged to refer to [35], [37] for a thorough revision and overview of noncoherent communications, recent advances, research trends and application to future backscatter communications scenarios. 2 Extensive Monte Carlo simulations in MATLAB software were carried out to illustrate the numerical performance trends discussed throughout this article.…”

Section: B Scope and Contributions Of This Workmentioning

confidence: 99%

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Massive Wireless Energy Transfer: Enabling Sustainable IoT Toward 6G Era

López

Alves

Souza

et al. 2021

IEEE Internet Things J.

132

108

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Recent advances on wireless energy transfer (WET) make it a promising solution for powering future Internet-of-Things (IoT) devices enabled by the upcoming sixth-generation (6G) era. The main architectures, challenges and techniques for efficient and scalable wireless powering are overviewed in this article. Candidates enablers, such as energy beamforming (EB), distributed antenna systems (DASs), advances on devices' hardware and programmable medium, new spectrum opportunities, resource scheduling, and distributed ledger technology are outlined. Special emphasis is placed on discussing the suitability of channel state information (CSI)-limited/free strategies when powering simultaneously a massive number of devices. The benefits from combining DAS and EB, and from using average CSI whenever available, are numerically illustrated. The pros and cons of the state-of-the-art CSI-free WET techniques in ultralow power setups are thoroughly revised, and some possible future enhancements are outlined. Finally, key research directions toward realizing WET-enabled massive IoT networks in the 6G era are identified and discussed in detail. Index Terms-Channel state information (CSI), distributed antenna systems (DASs), distributed ledger technology (DLT), energy beamforming (EB), intelligent reflective surfaces, Internet of Things (IoT), massive wireless energy transfer (WET), millimeter wave, sixth generation (6G), ultralow power. I. INTRODUCTION T HE SIXTH generation (6G) of wireless systems targets a data-driven sustainable society, enabled by nearinstant, secure, unlimited and green connectivity [1]-[3]. Stringent performance requirements in terms of security and

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“…To achieve low latency and ultra‐high reliability, it is essential to develop powerful high‐end processors that consume little power. Quantum computing seems to be a reliable solution to this issue [8].…”

Section: Research Challenges In Quantum Technologymentioning

confidence: 99%