PC lacks resources to process the signal of 1 MHz. What do I do?

Hello!

I created two FM demodulation algorithms in LabView (I have LabView 7.1)

Now, I want the two test methods.

I calculated the proportion of real parameters of the FM signal: carrier frequency, frequency of message and frequency deviation.

I run the FM signal with parameters:

Sampling frequency: 5 MHz

Frequency: 1 MHz

Message frequency: 2 kHz

Frequency deviation: 7, 5 kHz

Amplitude: 1

The problem is - my PC can't handle this insane amount of data.

I don't know, but VI is running very very slow, it looks like it's stuck.

My PC is:

1.6 GHz AMD (kernel)

512 MB DDRII RAM, bus 333 MHz

The overall objective must be capable of handling nearly original FM radio signal (with carrier around 100 MHz, message - deviation of 75 KHz and 20 KHz)

I understand that, for the signal, there should be about 5 samples per period.

But treatment 100 MHz signal - requires unreal performance.

How to deal with this problem? Should I downconvert my signal or use other techniques any?

Any help and suggestions are very appreceated.

Absolutely! downconvert instantly when you acquire your signal to reduce memory needs.  Or better yet Downconvert in the material before the acquisition of the signal and you should be able to handle the data in near real-time.

Tags: NI Software

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