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From: Michael Dwyer (mdwyer, timestreamtech dot com) Date: 2001.03.09 - 00.49 MST
Okay, this is a two-phase PSK system, as described in this doc: http://www.physics.udel.edu/wwwusers/watson/student_projects/scen167/thosguys/psk.html The picture at the bottom, you will find, looks identical to ours -- but it is labeled wrong. Look in the text below for the correct labels. Anyway, the first line turns out to be this: 11110011001101110001100011100101 Or possibly inverted. Now, we have to slide some frames along it to see what fits. A serial 'frame' is described here: http://www.mathworks.com/access/helpdesk/help/toolbox/instrument/ch_seri6.shtml We need to find patterns that match this: 0nnnnnnn[n][p][[1]1] Where the zero is a start bit, the n's are 7 or 8 data bits, the p is the optional parity, and there are 0-2 stop bits. Good luck! __________________________________________________ Do You Yahoo!? Get email at your own domain with Yahoo! Mail. http://personal.mail.yahoo.com/ -- This is the mod-chal mailing list. To unsubscribe, email majordomo, cryptofreak dot org with message body 'unsubscribe mod-chal'. Or, for more information, visit http://www.cryptofreak.org/.
This archive was generated by hypermail 2b30 : 2001.09.26 - 14.03 MDT |
