Characterization of Brazilian in-home power line channels for data communication

This paper focuses on the characterization of Brazilian in-home power line channels for data communication when a sounding-based approach is applied. Based on a measurement campaign carried out in seven Brazilian residences, a statistical characterization of frequency response magnitude, average channel gain, coherence bandwidth, root mean squared delay spread, coherence time, achievable data rate, additive noise and access impedance are presented, considering the frequency bands from 1.7 up to 30, 50 and 100 MHz. Comparative analysis considering previous contributions show disparities and similarities among typical in-home power line channels measured in different countries. The attained results reveal that average channel gain in Brazil is higher than in other countries, the linear relationship between average channel gain and root mean squared delay spread and the inverse relation between coherence bandwidth and root mean squared delay spread are confirmed. Moreover, these results show that coherence bandwidth in Brazil is wider than in European countries, root mean squared delay spread in Brazil is shorten than in US and European countries and coherence time in Brazil is shorter than what is previously reported in the literature.