Here's an interesting paper on reducing 3rd and 5th order IMD products, using digital pre-distortion. Which is a topic I've known about for years in optical systems, but I'd never thought about in RF systems.
http://library2.usask.ca/theses/available/etd-09152010-135739/unrestricted/ofdmtx.pdf Basic idea is to use a LUT to provide the inverse function of the non-linear gain curve of your gain chain. Similar idea for phase rotations for non-linear phase effects. -- Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
