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Reconfigurable intelligent surface (RIS) is very promising for wireless networks to achieve high energy efficiency, extended coverage, improved capacity, massive connectivity, etc. To unleash the full potentials of RIS-aided communications, acquiring accurate channel state information is crucial, which however is very challenging. For RIS-aided multiple-input and multiple-output (MIMO) communications, the existing channel estimation methods have computational complexity growing rapidly with the number of RIS units N (e.g., in the order of N2 or N3) and/or have special requirements on the matri...

William Howard Brown II was indicted on two counts for incidents that occurred in May of 2021.

Summer Forecast: Part I. - The Memorial Day holiday and the unofficial start of summer is a good time to take a look at what our elected (and unelected) policymakers in W...

Congress was out this week, but it returns the week beginning June 6 with a lot on its plate and legislative time at a premium.

Legislation—such as funding for the federal government and the armed services—will occupy much of Congress’s time and resources. Congress focused on issues such as war in Ukraine, the renewed debate around gun policy reform, inflation, and continued supply-chain issues.