On 05/12/2010 04:37 AM, Manne Tallmarken wrote:
Hello all,
I want to start expereiment with software defined radio but can't
make up my mind which one of the usrp and usrp2 is the most
suitable. I am new to FPGAs but want to start playing with these as
well. I use GNU/Linux and GCC as much as I can.
Some questions:
The usrp and usrp2 uses FPGAs from different manufacturers so I
assume the development environment will differ as well. Is anyone of
the two more suited for a linux system than the other? I don't want
to pay any license costs (and I'm glad if I can use the dev
environment longer time than a trial period... btw, I am a student).
The development environments are different, supplied by the vendor.
Both are available for Linux. The Altera one is free, but the Xilinx
one is for pay (there is a free one, but it doesn't work with our
device). As a student, though, you can probably get a free copy of the
Xilinx software.
To play around with a FPGA on a system like this, will I need the
extra size and speed xilinx spartan 3 gives me? (Maybe I want to
bruteforce some cryptos, doing some FIR filters or event wavelet
transformations)
The Xilinx one has multipliers, the altera one does not.
Since the usrp2 only have one tx/rx channel I would need two usrp2's
to get the same number of tx/rx channels as the usrp and this is not
currently an affordable option. In which cases will I need two tx/rx
channels? Examples?
The usrp2 is faster in many ways. In what applications will I need
the extra speed and extra bandwidth? Examples?
Any other cool stuff I can do with one of the boards but not the
other?
The USRP2 has a much bigger and faster fpga.
Are gnuradio programs written for usrp compatible with usrp2?
Most programs will work with both.
Matt
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