TeX source:

=\left[\begin{array}{ccccc}\hat{V}_{1} B_{11} \hat{F}_{1} & \hat{V}_{1} B_{12} \hat{F}_{2} & \cdots & \hat{V}_{1} B_{1 G} \hat{F}_{G} \\ \hat{V}_{2} B_{21} \hat{F}_{1} & \hat{V}_{2} B_{22} \hat{F}_{2} & \cdots & \hat{V}_{2} B_{2 G} \hat{F}_{G} \\ \vdots & \vdots & \ddots & \vdots \\ \hat{V}_{G} B_{G 1} \hat{F}_{1} & \hat{V}_{G} B_{G 2} \hat{F}_{2} & \cdots & \hat{V}_{G} B_{G G} \hat{F}_{G}\end{array}\right]