Tech billionaire Jack Dorsey-led Block's shares rose nearly 10% before the bell on Monday after the payments firm was added to the benchmark S&P 500 , marking a milestone for the fintech sector.

Digital data that has been certified by a respected institution is valuable and can be saved or transmitted over the internet. However, the issues are ensuring the security and reliability of stored ...

Non-orthogonal multiple access (NOMA) has attracted significant attention in the research community as a potential radio access technology for future wireless networks. In this work, we propose a ...