[hpsdr] Hermes Pure Signal

[Joe Martin]

Not really, I think.  Reducing the data rate addresses only one of the issues.  There still remain issues associated with the FPGA size not able to hold the CIC/FIR filters needed for PureSignal, as I understand the situation.  

Phil would be the one to comment on those particular requirements.  There might also be issues with insufficient bus lines to be able to route the IQ signals between modules as necessary for PureSignal.  The PureSignal developers (Phil, Warren, Doug) have tried to conceive of a workable scenario for the Atlas bus systems without success to date.  

Maybe Phil can re-summarize the unresolvable-to-date issues for us, in case my understanding/explanation is maybe erroneous in some way. 

73, Joe K5SO

On Dec 12, 2015, at 9:44 AM, Lyle Johnson wrote:

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> 
> Might it be possible to use the Mercury FPGA if the sampling bandwidth were reduced?  Instead of handling 384 kHz, perhaps 128 kHz or 96 kHz?
> 
> 73,
> 
> Lyle KK7P
> 
> On 12/12/15 1:43 AM, Helmut wrote:
>> ***** High Performance Software Defined Radio Discussion List *****
>> 
>> 
>> Hi Geoff,
>> 
>> PS or better this current code for adaptive predistortion needs a lot of
>> room in FPGAs due to very extensive filtering.  This room is not available
>> on the Mercury board. On the other hand Alfred, HB9EPU, is using his own
>> algorithm for adaptive predistortion on his Atlas based HPSDR setup with
>> similar impressive results. Alfred developed an effective method for sample
>> correlation, so that he can use the given filtering structures.
>> Unfortunately Alfred is using partly proprietary software licensed for his
>> person. He can’t share it with others, but it should be possible for a
>> skilled coder to develop a bypass. I'm sure Alfred is open for coaching.
>> 
>> 73, Helmut, DC6NY
>> 
>> -----Ursprüngliche Nachricht-----
>> Von: Hpsdr [mailto:hpsdr-bounces at lists.openhpsdr.org] Im Auftrag von Geoff
>> Gesendet: Samstag, 12. Dezember 2015 06:00
>> An: hpsdr at lists.openhpsdr.org
>> Cc: Mike Monnier
>> Betreff: Re: [hpsdr] Hermes Pure Signal
>> 
>> ***** High Performance Software Defined Radio Discussion List *****
>> 
>> On Sat, 12 Dec 2015 03:40:21 am Joe Martin wrote:
>>> ***** High Performance Software Defined Radio Discussion List *****
>>> 
>>> Hi Mike,
>>> 
>>> PureSignal is implemented for the ANAN-10 in the sotware and firmware
>>> versions you specified and in the current version of HPSDR PowerSDR mRx PS
>>> v3.3.6.0 too.
>>> 
>>> 73, Joe K5SO
>> snipped
>> 
>> Joe et al,
>> 
>> 	Is it likely that pure signal will be implemented on Atlas based
>> HPSDR rigs?
>> That is one place I'd like to blow my few discretionary $$$.
>> 
>> 73 de Geoff vk2tfg.
>> 
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