Selection of Platform for FFT

IBRAHIM DOGAN

Hi,

I will deal with spectrum analysis topic and I need some help for selection of development platform. Shortly, I want to make FFT (radix-4) computation for N=65536 point. Also, i have to take that FFT computation very fast such within 200us. For such an application, Which platform do you suggest whether multi-core DSP or FPGA? I am at the beginning stage of that project and i need some help.

Thanks.

over 14 years ago

0 Mukesh over 14 years ago

TI__Prodigy 170 points

Hi,

Consider C6678/4 multicore DSP...they are based on fixed and floating point capable C66x ISA and can do 4 times more fixed point MACs compared to the previous generation C64x+ architecture.

Regards,

Mukesh

0 IBRAHIM DOGAN over 14 years ago in reply to Mukesh

Intellectual 390 points

Hi Mukesh,

thanks for your considerations. I have to take FFT as fast as possible so, i have decided to use FPGA in order to use its parallelism feature.

thanks,

ibrahim

0 Dirk Buijsman over 14 years ago in reply to IBRAHIM DOGAN

Expert 1070 points

Also check the C6670: it has "only" 4 cores, but it also has 2 FFT hardware accelerators. Depending on your app (size, other algo's you want to run like filters, correlation etc) this might be your cheapest (FPGAs are pricy....) and fastest solution. The nice thing about a DSP is it's Flexibility: code changes are much faster implemented than in an FPGA.

Cheers,

-Dirk

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Selection of Platform for FFT