Re: [Discuss-gnuradio] Help : Is this right that the daughterboard passes data to the usrp board in the I and Q format.

[Marcus D. Leech]

On 28/04/2011 5:15 AM, ton ph wrote:
> Thanks marcus ,
>  That  means , if i use i5 processor and make some tweaking in 
> gnuradio in right areas , i could be able to process my 100 Mhz 
> bandwidth using my 200 MSPS ADC, 32 channel DDC which will only send 
> data of only 3500Khz bandwidth data to the CPU, in spite of inviting a 
> big overhead to the CPU by letting in the complete 100Mhz bandwidth 
> baseband data... If i let CPU to process only 3500 Khz bandwidth data 
> , i think we will be able to make the gnuradio do the processing.What 
> my doubt was that using 200MSPS ADC with gnuradio could give some 
> trouble or not ... as with the increase in the ADC rate , i hope the data
> rate will also increase and hence the rest of the chain.
>
> Your geniune advice is very much weighed from my side as well i am 
> still hoping your geniune suggestions and guide.
> Thanks
I don't have a full picture of your overall architecture, so I'm 
unwilling to make a definitive "yes" or "no" statement about what you 
will ultimately
  be able to make work.

It sounds like you're contemplating custom hardware, with a DDC 
implemented somewhere along the pipeline--in an FPGA?

Anyway, I think I've given you all the pointers and hints I really can 
at this point, and it's now up to you to "run with it".