NoiseTransformer.get_const_matrix_from_channel

static NoiseTransformer.get_const_matrix_from_channel(channel, symbols)[source]

Extract the numeric constant matrix.

Parameters

  • channel (matrix) – a 4x4 symbolic matrix.

  • symbols (list) – The full list [x1, …, xn] of symbols used in the matrix.

Returns

a 4x4 numeric matrix.

Return type

matrix

Additional Information:

Each entry of the 4x4 symbolic input channel matrix is assumed to be a polynomial of the form a1x1 + … + anxn + c. The corresponding entry in the output numeric matrix is c.