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, ...

Sleeping on the left side can help align the spine and reduce acid reflux. Back sleeping keeps the spine aligned but may worsen sleep apnea and snoring. Right-sided sleeping may improve heart health ...

Learn how to position yourself correctly as a goalkeeper with this detailed tutorial. Improve your positioning, anticipation, and overall goalkeeping skills to make more saves. #GoalkeeperTips ...

Abstract: A reconfigurable intelligent surface (RIS) allows a reflection transmission path between a base station (BS) and user equipment (UE). In wireless localization, this reflection path aids in ...