|Subject:||[Discuss-gnuradio] Question about sampling|
|Date:||Wed, 16 Mar 2005 17:18:23 -0500|
|User-agent:||Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax)|
Hello,I joined this group recently and have learnt a lot. I had a rather fundamental question. Suppose I sample the IF output (say, centered at 40 Mhz) of a tuner/mixer tuned to a ATSC DTV channel (6Mhz wide), and I want to detect the pilot frequency which is added to the channel during transmission, would I have to sample the IF at much higher than 2*Nyquist fy? The reason I ask is that the pilot occurs at a fixed fy relative to the tuned
channel. Thanks. Dinkar.
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