Algorithm 1 FastICA

1:Choose the initial value of w. 2:$w^{+}=E\left\{xg\left(w^{T}x\right)\right\}-E\left\{g^{\prime }\left(w^{T}x\right)\right\}w$ 3:$w=w^{+}/\parallel w^{+}\parallel$ 4:ifw is not converged then 5:    go to 2 6:end if where function g is $$\begin{array}{cc}\hfill g_1& =tanh\left(a_{1}y\right),\hfill \\ \hfill g_2& =yexp(-\frac{y^T}{2}),\hfill \\ \hfill g_3& =y^3.\hfill \end{array}$$ (16) $a_1$ is a constant 1 < $a_1$ < 2