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[Discuss-gnuradio] DPD paper
From: |
Marcus D. Leech |
Subject: |
[Discuss-gnuradio] DPD paper |
Date: |
Fri, 28 Oct 2011 00:44:41 -0400 |
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Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.15) Gecko/20101027 Fedora/3.0.10-1.fc12 Thunderbird/3.0.10 |
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
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