GPZ7000 and GPX6000 Bypolar square Wave

[Mr.Jaick]

Direct sampling is more difficult than using demods. You need a good ADC and good DSP to achieve similar SNR.

The signal doubles, but the noise only increases by sqrt(2).

so that's how it goes (you mean square root)
i was thinking about shifting the noise 180 deg. so it'll subtract in the adder

[Carl-NC]

i was thinking about shifting the noise 180 deg. so it'll subtract in the adder

Noise is wideband so whatever particular frequency cancels other frequencies will double. That's why, overall, it's a sqrt function.

[Mr.Jaick]

Noise is wideband so whatever particular frequency cancels other frequencies will double. That's why, overall, it's a sqrt function.

you're right, it gets worst
Thank you very much.