[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Discuss-gnuradio] A little DQPSK demodulation progress and a quest

From: Joseph DiVerdi
Subject: Re: [Discuss-gnuradio] A little DQPSK demodulation progress and a question
Date: Mon, 31 Mar 2003 09:23:18 -0700

Sorry for the second post but I forgot to insert the following:

Here's an example of the graph I'd personally like to see: 
http://xtrsystems.com/vlf/image/wwvb_xy . This graph represents the baseband 
demodulated signals from radio station WWVB (transmitting ASK at 60kHz). The 
Local Oscillator is 10kHz from the carrier so the demodulated signals are 
decidedly non-stationary. The two circles represent the two different 
amplitudes of the ASK and the ratio of their radii directly yields the 
amplitude modulation ratio. 

BTW, this data is significantly different that what your data is expected to 
look like. 

Best regards,
Joseph A. DiVerdi, Ph.D., M.B.A.          
http://xtrsystems.com/           970.980.5868 (voice) 
PGP Key ID: 0xD50A9E33           970.224.3723 (fax)

reply via email to

[Prev in Thread] Current Thread [Next in Thread]