Table 1 List of the main symbols
Symbol | Description |
|---|---|
L | The number of reflective elements with the ON state |
P | The number of activity vectors (\({\textbf{v}}_{p}\)) |
R | The number of reflective elements |
S | The number of eavesdroppers |
W | The number of legitimate users |
\({{\alpha }_{i}^{}}\) | The power allocation factor of the \(i^{th}\) legitimate user at the source |
\({\rho }_{\text {B}}^{}\) | The transmit SNR for the legitimate user |
\({\rho }_{\text {E}}^{}\) | The transmit SNR for the eavesdropper |