[time-nuts] GPS SDR

[Attila Kinali]

On Thu, 02 Feb 2012 12:15:41 -0800
Hal Murray <hmurray at megapathdsl.net> wrote:

> >> Yes, if you need lots o'bits, but a single bit sampler with wide 
> >> bandwidth is easy (which is why they do it).  It's basically a D-latch 
> >> at the end of the amplifier/limiter chain.
> 
> > Yes, but you lose IIRC about 3dB of performance compared to a 2bit ADC.
> 
> Only if you get the gain right.
> 
> A 1-bit ADC does the right thing with any gain.

If and only if you get over the minimal gain level :-)

Yes, you dont have problems with too much gain. But, then, 
he "problem" with too much gain is that you lose ADC resolution,
ie in the worst case reducing your fancy 32bit ADC to a 
simple 1bit ADC/comparator.

			Attila Kinali
-- 
Why does it take years to find the answers to
the questions one should have asked long ago?