153f77827dd75fc74aff90838d0f6b3955c1b27d,sk_dsp_comm/digitalcom.py,,QAM_SEP,#,423

Before Change

    rx_data.real[s1r] = (M - 1)*np.ones(len(s1r))
    rx_data.real[s2r] = np.zeros(len(s2r))
    // Fix-up edge points imag part
    s1i = mlab.find(rx_data.imag > M - 1)
    s2i = mlab.find(rx_data.imag < 0)
    rx_data.imag[s1i] = (M - 1)*np.ones(len(s1i))
    rx_data.imag[s2i] = np.zeros(len(s2i))
    rx_data = 2*rx_data - (M - 1)*(1 + 1j)
    //Correlate the first Ncorr symbols at four possible phase rotations
    R0,lags = xcorr(rx_data,tx_data,Ncorr)

After Change

    rx_data.real[s1r] = (M - 1)*np.ones(len(s1r))
    rx_data.real[s2r] = np.zeros(len(s2r))
    // Fix-up edge points imag part
    s1i = np.nonzero(np.ravel(rx_data.imag > M - 1))[0]
    s2i = np.nonzero(np.ravel(rx_data.imag < 0))[0]
    rx_data.imag[s1i] = (M - 1)*np.ones(len(s1i))
    rx_data.imag[s2i] = np.zeros(len(s2i))
    rx_data = 2*rx_data - (M - 1)*(1 + 1j)
    //Correlate the first Ncorr symbols at four possible phase rotations
    R0,lags = xcorr(rx_data,tx_data,Ncorr)

Instances