👉 Learn how to find the sum of a series using sigma notation. A series is the sum of the terms of a sequence. The formula ...

Description: 👉 Learn how to find the partial sum of an arithmetic series. A series is the sum of the terms of a sequence. An arithmetic series is the sum of the terms of an arithmetic sequence. The ...

Abstract: In this letter, we investigate the physical-layer security of an active reconfigurable intelligent surface (ARIS)-assisted uplink single-input multi-output non-orthogonal multiple access ...