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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, ...

The R8 is Audi's iconic mid-engine supercar. With a V-10 engine mounted behind the driver, the R8 represents the pinnacle of Audi's performance and styling capabilities. Despite its track-ready ...

Lenses 12 lenses of Christmas: Sigma brings the bokeh, Fujifilm flips a pancake with a twist, and Laowa does what Canon can't Lenses 12 lenses of Christmas: Nikon redesigns a classic, while Sigma, ...