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I am using simulink and have got IQ samples from an RTL-2832 / E4000 usb dongle. I would like to learn how to decode an FM station to audio and attempt this project on simulink. How do I proceed with the IQ Samples towards decoding?

Treat this a question from a DSP novice.

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  • $\begingroup$ I have managed to do this using GNURadio, but it had a block WFMDecoder or something. On Simulink, I did a bandpass filter on the IQ samples. squared and rooted it to get a real signal. Tried to mix it with a locally generated carrier and could display a few things on the scope, but nothing made much sense. $\endgroup$ – Lord Loh. Nov 1 '12 at 2:50
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    $\begingroup$ after search over google, this link chrec.org/pubs/MILCOM09_B1.pdf looks related to your problem. Given two method will demodulate the FM signal, and later you have process it further to separate L and R channel. $\endgroup$ – hari Nov 1 '12 at 6:33

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