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From: | Marcus Müller |
Subject: | Re: [Discuss-gnuradio] How to change the SNR through gnuradio |
Date: | Tue, 1 Mar 2016 12:02:25 +0100 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.0 |
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:
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