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Hi Vasiliy,<br>
<br>
I work on the signal processing SOFTWARE; so, I won't comment on the
firmware specifically. However, there's nothing technically wrong
with the general approach you propose. We've experimented with
various software/firmware splits in this regard.<br>
<br>
73,<br>
Warren NR0V<br>
<br>
<br>
<div class="moz-cite-prefix">On 9/21/2013 7:32 PM, k3it wrote:<br>
</div>
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cite="mid:CABV6HGt0HCG6TicR=vphDxDx7_O833ownc4RCMjtbyb2R+36HA@mail.gmail.com"
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<pre wrap="">***** High Performance Software Defined Radio Discussion List *****
</pre>
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<div dir="ltr"> Does anybody know how big of an effort would be to
modify the current Hermes firmware to send the RX streams after
the CIC filters and exclude all FIR processing? I'd like to
run an experiment with implementing a decimating FIR filter on
the PC.
<div>
<br>
</div>
<div>For example I'd like CIC decimate to 384k in FPGA and then
CFIR decimate by 4 on the PC to get 96k finished spectrum. is
there anything wrong with this approach?</div>
<div><br>
</div>
<div>I want to do this for two reasons <br>
</div>
<div>- get feet wet with Verilog </div>
<div>- see how much FPGA space can be recovered by moving part
of the processing to the PC</div>
<div><br>
</div>
<div>-- </div>
<div>73! Vasiliy K3IT</div>
</div>
<br>
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