  Understanding the interference scenario in power lines network is a key step
to characterize the power line communication (PLC) system. This paper focuses
on the characterization and modelling of the stationary noise in Narrowband
PLC. Measurement and analysis of noise is carried out in the Tunisian outdoor
Low Voltage (LV) power line network in the frequency band below 500 kHz. Based
on existing models and measurements results, a parametric model of noise is
proposed; the model parameters are statistically studied.
