Hi Marcus, Thanks for your response. I'm trying to make a channel simulator where my signal going into the USRP gets attenuated by free space path loss. Typically, I know that this is done through the use of hardware, like fixed attenuators, but I wanted to go into an all DSP approach with the use of GNU radio.
Regards, Jose On Sun, Jul 16, 2017 at 3:38 AM, Marcus Müller <marcus.muel...@ettus.com> wrote: > Hi Jose, > > yep, multiply const with a real value |·| < 1 would be **equivalent** to > an analog attenuator. > > anyway, it's very uncommon to do such an operation in DSP, unless you need > a fair comparison between different signals or such. > > Maybe you'd want to explain why you want to do that? > > Best regards, > > Marcus > > On 07/16/2017 07:23 AM, Jose Ruvalcaba wrote: > > Hello, > > This may seem like a really simple question, but If I wanted to attenuate > my signal coming out from a USRP source block in GRC, say by 80 dB,, how > would I go ahead and do that? Would I just add a multiply constant block > after my USRP source block to scale down the incoming signal's amplitude? > Would I be able to check my attenuated signal through the QT frequency plot > block? > > > Thanks, > Jose > > > _______________________________________________ > Discuss-gnuradio mailing > listDiscuss-gnuradio@gnu.orghttps://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >
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