This paper presents an analysis of the noise in multi-conductor power grid networks. This is relevant in multiple-input multiple-output (MIMO) power line communications. In particular, we consider in-building networks and the narrow band spectrum 3-500 kHz. The noise is acquired between the Live and Protective-Earth and between the Neutral and Protective-Earth conductor pairs in a number of outlets. The results show a prominent impulsive time variant behavior. More interestingly, the noise signals in the two conductor pairs are not only correlated, but statistically dependent and in many cases identical. This suggests a form of determinism of the noise signals that can be exploited by spatial noise canceling techniques, one of which is presented in this paper.
Noise determinism in multi-conductor narrow band PLC channels
Tonello A. M.
2018-01-01
Abstract
This paper presents an analysis of the noise in multi-conductor power grid networks. This is relevant in multiple-input multiple-output (MIMO) power line communications. In particular, we consider in-building networks and the narrow band spectrum 3-500 kHz. The noise is acquired between the Live and Protective-Earth and between the Neutral and Protective-Earth conductor pairs in a number of outlets. The results show a prominent impulsive time variant behavior. More interestingly, the noise signals in the two conductor pairs are not only correlated, but statistically dependent and in many cases identical. This suggests a form of determinism of the noise signals that can be exploited by spatial noise canceling techniques, one of which is presented in this paper.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
