Hi, I used the USRP N210 and sbx board.What is the dynamic range of the instrument?Namely the maximum SNR?Thanks so much.
Best Regards, zs 2016-03-01 19:58 GMT+08:00 Marcus Müller <marcus.muel...@ettus.com>: > I think that question answers itself if you consider what SNR is. > > Best regards, > Marcus > > > On 01.03.2016 12:34, w xd wrote: > > Thanks so much. > > In this case,I just change the gain of the transmitter,will be change the > snr of the receiver? > > Thanks. > > 2016-03-01 19:02 GMT+08:00 Marcus Müller <marcus.muel...@ettus.com>: > >> Dear zs, >> >> > I want to change the ratio of power of the received signal to power of >> the noise. >> >> well, improving receiver SNR is the *core* problem of all wireless >> communication. Unless you just add noise (on the receiver or the >> transmitter side, depending on whether you want your noise to be >> channel-shaped or not), there's your whole digital communication knowledge >> you can apply (matched filtering, oversampling, coding gain, preselection >> filtering...). >> >> > And I want to change the gain of the transmitter. >> Well, then do that. The usrp_sink block has a TX gain setting, and all >> daughterboards (aside from the Basic*, LF* and TVRX* boards) have >> adjustable gain: use the set_tx_gain(gain) method, or if you're using GRC, >> look into the "RF settings" tab. >> >> Best regards, >> Marcus >> >> >> On 01.03.2016 09:56, w xd wrote: >> >> Sorry for that. >> >> I'm now using the USRP N210,one transmitter and one receiver.I want to >> change the ratio of power of the received signal to power of the noise.And >> I want to change the gain of the transmitter. >> >> 2016-03-01 16:45 GMT+08:00 Marcus Müller < <marcus.muel...@ettus.com> >> marcus.muel...@ettus.com>: >> >>> Dear zs, >>> >>> your question is absolutely unclear. SNR of what? What instrument? TX or >>> RX, or simulation? >>> >>> Best regards, >>> Marcus >>> >>> >>> On 01.03.2016 07:06, w xd wrote: >>> >>> Hi, >>> >>> I want to change the SNR through gnuradio.Can I realize it by just >>> change the gain of the gnuradio?Or the instrument is fixed,and the snr >>> can't be change? >>> >>> Thanks so much. >>> >>> Best Regards, >>> zs >>> >>> >>> _______________________________________________ >>> 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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