I guess it'd be nice if there was a way to compare spectral efficiency vs. processing power. In terms of complex modulation schemes, which would be least intensive? QAM, QPSK, GMSK?
I ask because I'm trying to use an Atom-based system for running GNURadio and I'd like to minimize the overhead as much as possible. I've been using GMSK so far, but I got to wondering if I could save any appreciable amount by switching to an "easier" modulation scheme. Thanks! -William On Wed, Nov 17, 2010 at 11:03 AM, Marcus D. Leech <mle...@ripnet.com> wrote: > On 11/17/2010 09:52 AM, William Cox wrote: > > Do the processor usage for the various mod/demod schemes change that > > much? Which scheme is the least processor intensive? > > Thanks! > > -William > > > > > Wildly and vastly! > > Consider AM, for example (or OOK in the data world) it's just a multiply > operation on the carrier. > Simple, easy, and demodulation is just as cheap. > > From that point, it's all over the place! > > OFDM is probably the most expensive one in the arsenal these days. > > -- > Principal Investigator > Shirleys Bay Radio Astronomy Consortium > http://www.sbrac.org > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio >
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