Table 1 Key notations used in this paper
From: On the average secrecy capacity for indoor visible light communication systems
Notations | Explanation |
|---|---|
\(\mathcal {C}_{s}\) | Secrecy capacity |
\(\overline {\mathcal {C}}_{s}\) | Average secrecy capacity |
A | Peak power |
ε | Average power |
α | Optical average-to-peak power ratio |
\(\mathbb {E}_{x}(\cdot) \) | Mean value of a variable to x. |
Ï• | Emergence angle |
ψ | Incidence angle |
m | Lamberts mode order |
\(\Phi _{\frac {1}{2}}\) | Transmitter half-power semiangle |
\(\mathcal {R}\) | Illumination region |
l | Vertical distance |
di | Receiver and center distance |
Oi | Center of di mobility region |
ui | Radius of di mobility region |
ζi | Standard deviation of Gaussian distribution |
(xi,yi) | Coordinate of the receiver |
f(di) | The PDF of di |
ti | Distance of Oi and center |
ti1,ti2 | Coordinate of Oi |