PDF files have become ubiquitous in our multi-platform world. This convenient file format makes it possible to view and share documents across various devices using various operating systems and ...

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, ...

"I’m so glad that young people can create things like PC boards online. May your creativity have no limits!” – Steve Wozniak, Apple co-founder endorsing Hack Club OnBoard It's easier than ever for ...

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