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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, ...

Javascript must be enabled to use this site. Please enable Javascript in your browser and try again. Get the AARP Now app. New and improved, it’s the app that makes ...

It has been 37 days since the men's college basketball season began -- and what a wild opening stretch it has been. The freshmen class quickly emerged as one of the best in the history of the sport.