On Sun, Apr 3, 2016 at 8:00 AM, Paul Creaser <[email protected]> wrote:
> With regards to OFDM I have one question. > > I have a 8 channel OFDM using 8PSK. To me a single symbol using 8PSK means > 8 > bits, hence one byte of data. Since I have 8 channels, that would mean 64 > bytes. This would equate to a single OFDM symbol of 64 bytes? > No. 8PSK means that you have eight symbols in your alphabet that have different phases. So you have a constellation in complex space where you represent information in 8 points. The Number of bits you can represent with an alphabet of size 8 is log2(8) = 3 bits. > Going on further a payload of 16 OFDM symbols would mean 16*64 bytes of > data. > > I'm not too sure of the relationship between bits, symbols and OFDM symbols > even though it appears to be simple. > Not really related to this question (I think Ron Economos has given you a good amount of detail there). But as for PLC, Nico Otterback from KIT has been doing work there for a while. He presented his work at GRCon14: http://www.trondeau.com/grcon14-agenda/ Look for "GNU Radio for Power Line Communications". Tom
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