Broadband over Power Lines Systems Convergence: Multiple-Input Multiple-Output Communications Analysis of Overhead and Underground Low-Voltage and Medium-Voltage BPL Networks
Figure 3
Frequency spectra of attenuation coefficients of MIMO/BPL channels: CCs (solid lines) and XCs (dashed lines)—the subchannel frequency spacing is equal to 1 MHz. (a) Overhead LV. (b) Overhead MV. (c) Underground LV. (d) Underground MV.