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, ...

Ask the publishers to restore access to 500,000+ books. The Internet Archive keeps the record straight by preserving government websites, news publications, historical documents, and more. If you find ...

If you're looking for something fun to stimulate your mind and expand your cultural knowledge, you can't do better than a crossword puzzle. When they first gained popularity during the 1920s, they ...

Playing video games is an expensive hobby. Whether you’re purchasing a brand-new console or buying the latest releases, keeping your digital library padded with the latest games can be costly. Luckily ...

Lauren (Hansen) Holznienkemper is a lead editor for the small business vertical at Forbes Advisor, specializing in HR, payroll and recruiting solutions for small businesses. Using research and writing ...