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Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...

Abstract: This paper presents a comprehensive survey on acquisition, tracking, and pointing (ATP) mechanisms used in free-space optical (FSO) communications systems. ATP mechanisms are a critical ...

Apple has finally unveiled the new iPhone 14 and iPhone 14 Pro. The Apple cynical may think that there probably isn't a huge difference between them. Indeed, many components are the exact same between ...