comms.py 文件源码

def ser(x, y):
    """Measure symbol error rate between symbols in x and y.

    :param x: symbol array #1
    :param y: symbol array #2
    :returns: symbol error rate

    >>> import arlpy
    >>> arlpy.comms.ser([0,1,2,3], [0,1,2,2])
    0.25
    """
    x = _np.asarray(x, dtype=_np.int)
    y = _np.asarray(y, dtype=_np.int)
    n = _np.product(_np.shape(x))
    e = _np.count_nonzero(x^y)
    return float(e)/n