[hpsdr] The Basics (with updates)

[Robert McGwier]

We do NOT need those kinds of things (Cordic libraries for trig and 
other useful nonlinear functions),  half band and cic filters, etc.  The 
fun part will be building and debugging or own or adapting the offerings 
in http://www.opencores.org/ to our needs.  That is good news.

Bob




Lyle Johnson wrote:
>> ...We are using the TMS320C6723 and I believe an Actel part in Lyle's 
>> design for the SDX.  Frank has discovered some issues which might 
>> make use of the Actel part difficult, if not impossible, for the 
>> HPSDR project because of potential licensing/IP related issues which 
>> would be inconsistent with the "mission/vision" of this  group.  IF 
>> this reading of things turns to be accurate,  we will have to rethink 
>> it for HPSDR.
>
> The issue was with using the new Actel/Synplicity DSP library IP.  As 
> long as we do our own CORDIC filters and so forth and don't use their 
> tool -- easy to do since all we have to do is not buy it ;-) - we 
> avoid the issue.
>
> 73,
>
> Lyle KK7P
>
>


-- 
AMSAT VP Engineering. Member: ARRL, AMSAT-DL, TAPR, Packrats,
NJQRP/AMQRP, QRP ARCI, QCWA, FRC. ARRL SDR Wrk Grp Chairman
Laziness is the number one inspiration for ingenuity.  Guilty as charged!


 1146800400.0