As 2021 and the holiday season come to a close, the Epic Games Store has one more treat up its sleeve. Until January 6, Tomb Raider: Game of the Year Edition, Rise of the Tomb Raider: 20 Year ...

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, ...