these guys at synopsis re-invented and implemented casper's parameterized parallel FFT, (about a decade after we did):
"Using the Parallel FFT for Multigigahertz FPGA Signal Processing<http://issuu.com/xcelljournal/docs/xcell_journal_issue_82/51?mode=window&viewMode=doublePage> " http://issuu.com/xcelljournal/docs/xcell_journal_issue_82/51?mode=window&viewMode=doublePage dan
