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From: | Narayanan, Sivaramasubramanian (R&T) |
Subject: | [Discuss-gnuradio] Clarification on FM/AM implementation |
Date: | Fri, 24 Jul 2009 11:00:25 +0530 |
Hi, I am trying to implement a FM/AM multiplex signal using USRP
board, with Simple TX RX daughter boards. I need a basic signal to be modulated over FM and use that
FM modulated signal as a base band for AM modulation, which will be finally
sent to USRP. I was trying to use blks2.nbfm_tx / blks2.wfm_tx. But in
both the functions, I can specify only the peak deviation but not the center
frequency. Please let me know how do I do an FM modulation by specifying both
Fc and delta-f. I have one more question. How do I do an AM modulation? I don’t
find any specific function for that. If I just connect the baseband signal to
the tuner card, tuning the usrp subdevice to the carrier frequency, will that
transmit an AM modulated signal? I appreciate any help at these points at the earliest. Thanks and Regards, Sivaram |
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