W = wignervilledist(f); W = wignervilledist(f, g);
f, g | Input vector(s) |
w | Wigner-Ville distribution |
wignervilledist(f) computes the Wigner-Ville distribution of the vector f. The Wigner-Ville distribution is computed by
where \(R(n,m)\) is the instantaneous correlation matrix given by
where \(m \in {-L/2,\ldots, L/2 - 1}\), and where \(z\) is the analytical representation of \(f\), when \(f\) is real-valued.
wignervilledist(f,g) computes the cross-Wigner-Ville distribution of f and g.
WARNING: The quadratic time-frequency distributions are highly redundant. For an input vector of length L, the quadratic time-frequency distribution will be a \(L \times L\) matrix.