Maximization of Visible Light Communication Capacity Employing Quasi-Linear Preequalization with Peak Power Limitation

Figure 9

Measured electrical spectra before VLC system (a) without preequalization, (b) with zero-forcing preequalization, (d) with linear preequalization, (f) with convex preequalization, and (h) with concave preequalization and receiving electrical spectra after VLC system (c) with zero-forcing equalization, (e) with linear preequalization, (g) with convex preequalization, and (i) with concave preequalization.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)