On Tue, Aug 29, 2006 at 10:08:47PM -0400, Lee Patton wrote:
> I've taken a shot at coming up with block diagrams for the USRP and
> RFX2400. The diagram for the USRP is the result of information I've
> gleaned from different messages in the list, data sheets, and block
> diagrams created by other
forgot to include the list...
--- Begin Message ---
On Wed, 2006-08-30 at 11:06 +0800, hanwen wrote:
> I'm going to implement a 2 x 2 MIMO system with USRP and I came up
> with some problems of using USRP as sink and source.
> I'm using FLEX 2400. At the Tx side. I'm going to use two flex2400s
> wi
I've taken a shot at coming up with block diagrams for the USRP and
RFX2400. The diagram for the USRP is the result of information I've
gleaned from different messages in the list, data sheets, and block
diagrams created by other GNU Radio users (specifically, Achilleas
Anastasopoulos). The RFX24
hanwen wrote:
At the Rx side, only one flex2400 is enough, I guess, because
both TX/RX and RX2 can do receiving.
No, you can receive from TX/RX or RX2, but not both at the same time.
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hi, all ^_^
I'm going to implement a 2 x 2 MIMO system with USRP and I came up with some problems of using USRP as sink and source.
I'm using FLEX 2400. At the Tx side. I'm going to use two flex2400s with 1 TX/RX on each. At the Rx side, only one flex2400 is enough, I guess, because both TX/RX an
paul munro wrote:
So is the signal multiplied by sin and cos before the ADCs then?? How
do you determine the the I & Q channels??
Yes, on the daughterboards which use quadrature sampling. This is part
of the quadrature downconverters.
Matt
So is the signal multiplied by sin and cos before the ADCs then?? How do you
determine the the I & Q channels??
From: Matt Ettus <[EMAIL PROTECTED]>
To: paul munro <[EMAIL PROTECTED]>
CC: discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] I&Q Sampling
Date: Tue, 29 Aug 2006 14:33:31 -07
paul munro wrote:
Am just looking at the data sheet for the ADC's now and noticed the on
chip Hilbert filter...
We don't use that
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Carlo E. Prelz wrote:
> Good day everyone. There must be a wide variety of persons reading
> this list. I hope there is some good soul there who happens to
> concretely understand the wherefores of radio waves, and has the
> ability to break the bread of this knowledge with those (like me) who
> ar
Am just looking at the data sheet for the ADC's now and noticed the on chip
Hilbert filter...
Cheers
From: Matt Ettus <[EMAIL PROTECTED]>
To: paul munro <[EMAIL PROTECTED]>
CC: discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] I&Q Sampling
Date: Tue, 29 Aug 2006 14:11:42 -0700
paul m
paul munro wrote:
How does the USRP do its quadrature sampling??
There seems to be many differing methods of achieving this. Some
suggest the the ADC's are off set by 90 deg,
There are 2 ADCs, one samples the I channel, one samples the Q channel. The
others that the samples are multipl
Good day everyone. There must be a wide variety of persons reading
this list. I hope there is some good soul there who happens to
concretely understand the wherefores of radio waves, and has the
ability to break the bread of this knowledge with those (like me) who
are more prone to logics than to e
How does the USRP do its quadrature sampling??
There seems to be many differing methods of achieving this. Some suggest the
the ADC's are off set by 90 deg, others that the samples are multiplied by a
series of 0,1,0.-1 and 1,0,-1,0 (which seems a waste of samples).
Interested to know...
Pau
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