The Matlab code I wrote (during my work on modeling transmission characteristics that deal with a very complicated medium that mixes the hostile behaviour of a power-line with that of a communication channel) for the publication:

Alexandre Matov "Measurements and Modeling of Power Line Channel at High Frequencies (2001)"

https://researchgate.net/publication/256435562_Measurements_and_modelling_of_power_line_channel_at_high_frequencies