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 <[email protected]>: > 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 <[email protected]>: > >> 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 >> [email protected]https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> [email protected] >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> > >
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