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, ...

T-R PHOTO BY LANA BRADSTREAM The Grinch stops at the soft opening of Squish in downtown Marshalltown yesterday and visits with co-owners Bobbie Slaney and Tiffany Fouts as Fouts’ children enjoy the ...