Long Cross-correlation on FPGA

[gmacca01]

Hello,

I'm using a FAM ADC and I'd like to correlate the received samples of a block/window that is about 6000 samples long with a known sequence that is also 6000 samples long. Essentially a long auto-correlation on the FPGA (7966-R). What is the best method for doing this? I think it is rather difficult to build and implement a long matched FIR filter (6000 samples), and also it is not practical I don't think. I know I could do this on the host, but i'd prefer to do this on the FPGA. Any ideas or suggesions would be greatly appreciated. 

Thanks!

-Gmac

[Great_Britton]

Hey Gmac,

Iwould take a look at this thread:

http://forums.ni.com/t5/PXI/Cross-Correlation-on-LX110-Virtex-5/td-p/1917719

It points to some resources that you might find helpful.

[David-A]

Theres also a cross correlation example that the FlexRIO driver installs in the example finder.

Open the example finder and navigate to Hadware Input and Output>>FlexRIO>>FPGA Fundamentals>>FFT>>Cross-Correlation.lvproj