tools_fri_doa_plane.py 文件源码

def compute_mtx_obj(GtG_lst, Tbeta_lst, Rc0, num_bands, K):
    """
    compute the matrix (M) in the objective function:
        min   c^H M c
        s.t.  c0^H c = 1

    :param GtG_lst: list of G^H * G
    :param Tbeta_lst: list of Teoplitz matrices for beta-s
    :param Rc0: right dual matrix for the annihilating filter (same of each block -> not a list)
    :return:
    """
    mtx = np.zeros((K + 1, K + 1), dtype=float)  # <= assume G, Tbeta and Rc0 are real-valued
    for loop in range(num_bands):
        Tbeta_loop = Tbeta_lst[loop]
        GtG_loop = GtG_lst[loop]
        mtx += np.dot(Tbeta_loop.T,
                      linalg.solve(np.dot(Rc0, linalg.solve(GtG_loop, Rc0.T)),
                                   Tbeta_loop)
                      )
    return mtx