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Modern communication systems rely on multiple antennas that enhance the performance of network links using a series of techniques known as Multiple Input Multiple Output (MIMO). However, new technology is needed to meet the demands of a rapidly increasing number of wireless devices and enable the next generation of cellular systems. Known as Massive MIMO, this adaptation of traditional MIMO techniques presents challenges to research and development teams worldwide. 

Much of life involves setting priorities. In the age of information overload, the need to select relevant information and prioritize is greater than ever. Ranking product choices, identifying items of greatest relevance and interest and setting priorities are widespread issues in economics, health informatics and online networks.