Any friends ever worked on noise variance estimation using the USRP?

GNU Radio
1

Hi gurus,

I am doing an experiment which need to estimate the noise variance of
each
USRP as receiver.
My question is that besides the sample variance method, is there any
other
method to achieve better accuracy?
And for a single USRP, is the variance stable after the power on? And is
the measurement related to working frequency?

–

Alex,
Dreams can come true just believe.

2

Copy to usrp-users

---------- Forwarded message ----------
From: Alex Z. [email protected]
Date: Tue, Jul 24, 2012 at 4:08 PM
Subject: Any friends ever worked on noise variance estimation using the
USRP?
To: gnuradio mailing list [email protected]

Hi gurus,

I am doing an experiment which need to estimate the noise variance of
each
USRP as receiver.
My question is that besides the sample variance method, is there any
other
method to achieve better accuracy?
And for a single USRP, is the variance stable after the power on? And is
the measurement related to working frequency?

–

Alex,
Dreams can come true just believe.

–

Alex,
Dreams can come true just believe.