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1) If you are going to mix at 10Mhz then you need to upsample(interpolate) to 10MHz.
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I am going to mix at 100 MHz, 10 MHz is just an intermediate frequency, I think I am going to use a compensation filter with interpolation factor of 10.
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2) 10000KHz/178.571KHz is a weird fraction and = 10000000/178571 that I doubt if it simplifies any further.
Then you have to interpolate by num/8 (8 done in rrc) and decimate by denum.
I don't know if your cic will support that sort of figure.
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What I actually did is that I divided the 50 MHz by 280, I didn't write all of the resultant fraction but it exists in hardware. So I don't think I'll need fractional interpolation, or will I?
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3) use system clock of 10MHz on both fir and cic with a fifo in between to control rate.
You cannot run cic output at 10MHz unless you upsample to 10MHz through FIR+CIC
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How do I upsample through FIR+CIC? I didn't get this.
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Who decides 178.571KHz. Is't an audio application?
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I did :D I chose to send audio over air for demonstration purposes.
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