Abstract: This letter proposes a hybrid beamforming framework for massive multiple-input multiple-output (MIMO) in near-space airship-borne communications. To achieve high energy efficiency (EE) in ...

Learn how to write the sum from a geometric series. A series is the sum of the terms of a sequence. A geometric series is the sum of the terms of a geometric sequence. The formula for the sum of n ...

Abstract: Weak leakage localization in energy interconnection systems is particularly challenging due to the unclear signal change points caused by the long-distance propagation of negative pressure ...