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, ...

Chest pain when coughing can sometimes be a sign of a medical emergency like a heart attack. Acute bronchitis causes symptoms like coughing with mucus and chest soreness. GERD involves stomach acid ...

Abstract: Matrix computation is ubiquitous in modern scientific and engineering fields. Due to the high computational complexity in conventional digital computers, matrix computation represents a ...

Tim is an Australian Senior Editor based in Germany who has been passionate about video games since he first picked up a PlayStation 1 controller to play Crash Bandicoot as a kid. He started out with ...