Re: [Discuss-gnuradio] sps in receiver

[Marcus Müller]

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Hi Nemanja,

uff, that's quite a lot of text I hardly understand.
Could you please confirm:

* You want to design a receiver
* the receiver should have an Analog-to-digital converter
* You already have a design for mixing from RF to baseband

The rest I don't understand. What is your question? How is it related
to GNU Radio?
But it really does sound exciting!

Greetings,
Marcus

On 06.12.2013 11:26, Nemanja Savic wrote:
> Hi all guys,
> 
> this time :), my question is regarding soem reference book or any
> other kind of literature, where I can find about how digital
> receiver should be designed regarding sps. Namely, my current
> receiver is more or less simulation of some analog circuitry that I
> understand better than DSP. For example, after demodulation I use a
> block that is apprximation of diode min max circuit for setting the
> right threshold for getting dgital signal out of "analog"
> demodulator output. After that my bit slicer works more or less 
> like the one found in the UART. For this reasons, the signal needs
> to be highly oversampled, for example, symbol rate is 19.2kb and I
> use sampling frequency of 500ksps. When lowering sampling frequency
> to 250ksps, the performance of the receiver degrades a lot, plus
> probably to many processing effort than it should be.
> 
> Thanx,
> 
> 
> 
> _______________________________________________ Discuss-gnuradio
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