Is 200 Mbs BPL for real?
200 Mbs BPL is in development by DS2 and Homeplug (currently DS2 is ahead of Homeplug in developing a 200 Mbs system). At the time of this writing I’m aware of one underground 200 Mbs commercial system in the US carrying customer traffic. One has to ask how this can be viable. 200 Mbs of BPL bandwidth with an 8 bits/hertz efficiency rate would require 25 Mhz of spectrum free and clear. Current BPL systems using 3 or 4 Mhz channels have had interference complaints lodged. Finding 25 Mhz in the real world is difficult, and spectral efficiencies as high as 8 bits/hertz are extreme optimistic. It should be noted that 200 Mbs BPL would be the backbone bandwidth an not the actual bandwidth that would be delivered to the end user.
