Re: System Requirements for High Bandwidth SDRs Based on Your Experience

[Marcus Müller]

Hi Mutlu,

1600 MHz instantaneous bandwidth: You will be very hardly pressed building a PC-style 
system that even has the necessary external bandwidth to get that in. So, you're probably 
looking at hefty server systems, and more likely even, need to re-architect your system 
approach to allow for distributed computing on multiple computers.

For the lower bandwidths: Whether, and on what hardware, these are feasible 100% depends 
on what you're planning to do with these signals, what your reliability, latency and 
flexibility requirements are, and how you get data in and out of your system. For example, 
if you need to record 400 MHz of instantaneous bandwidth, you will need a rather hefty 
storage array. If you don't need to record, then not. Applying a 11-tap halfband filter is 
a lot easier than applying a 10003-tap channelizer.  No general statement can be given, 
not even on orders of magnitude, until you sat down and specified what you need in more 
detail. As a general rule of thumb: 1600 MHz of instantaneous bandwidth cost *a lot* in 
SDR hardware. Why would you even start to save money on a PC there? Buy the thing with the 
highest clock rate, highest memory bandwidth and most CPU cores that you can get on the 
market.

Best regards,
Marcus

On 19.10.22 07:54, Mutlu Aydın wrote:
> Hello,
>
> I am searching for a computer/workstation that will work with high bandwidth SDRs. Do you 
> recommend computer/workstation systems for working with SDRs that are capable of 200MHz, 
> 400 Mhz, 800 MHz  and 1600 Mhz etc instantaneous bandwidth based on your experience? What 
> are important specs (RAM CPU etc)  for receiving without dropping samples?
>
> Thank you.
>
> Mutlu AYDIN