[Discuss-gnuradio] Can one USRP be connected with multiple GNU Radio?

2010-08-04 Thread
Hello,

Can one USRP connected with multiple PCs, each of PC runs a GNU Radio, so as to 
formulate a distributed system?

And on the other side, can one PC running GNU Radio be connected with multiple 
USRP?

Thanks

Zhen



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回复: [Discuss-gnuradio] May I use GUN Radio without USRP

2010-07-11 Thread
Hi, Josh

Thank you very much, your opinion is really helpful! Yes, GNURadio + USRP is an 
excellent simulation environment. I will consider again how to leverage it for 
my application.

Hanks







发件人: Josh Blum 
收件人: discuss-gnuradio@gnu.org
发送日期: 2010/7/11 (周日) 1:08:46 下午
主   题: Re: [Discuss-gnuradio] May I use GUN Radio without USRP


> I want to know may I use GNU radio without USRP.
> 

Of course! Gnuradio can be a stand-alone simulation environment. And you can 
interface it with anything that you can write code for.

GNU Radio is...

* An API for creating signal blocks (C++/Python)
* A runtime environment for signal processing
* A library of signal processing blocks
* User scripts and applications
* Hardware drivers (USRP/USRP2)
* An application for creating flow graphs (GRC)

> I mean Since USRP is just used for transiver, ADC/DAC,  converting RF signal 
to
> baseband and transmitting baseband signal to GNU Radio for processing, then 
may
> I produce baseband workload by an Agilent baseband signal generator or even
> Matlab, and then connect GNU Radio with signal generator or Matlab?
> 

If you can write code in some language to acquire samples from lab equipment, 
then you can write a custom gnuradio block for that equipment. :-)

> 
> The reason I am thinking about this is that from some analysis, I find the 
data
> rate of the USB2.0 bus limits the bandwidth of the base band signal to 8 MHz,
> which is not enough for my project. And My focus is just baseband signal
> processing, I want to save money on USRP if I can use existing equipments in 
>the
> lab.


Can you test your application at lower data rates? Its usually a good idea to 
see that

1) you can implement the processing in simulation in the gnuradio environment
2) you can run the processing at a low rate on a platform like the USRP
  2a) prove that the CPU can keep up at lower rates
  2b) prove that the algorithm works in the presence of noise and frequency 
offsets

So usrp can be a valuable part of your RF development even if you must replace 
it with a higher rate/more expensive device for delivery. Is the extra time 
spent integrating agilent equipment worth it if you find out that your 
algorithm 
cant run in real-time at lower usrp rates?

Hope that helps!
-Josh

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[Discuss-gnuradio] May I use GUN Radio without USRP

2010-07-11 Thread
Hello,

I want to know may I use GNU radio without USRP. 

I mean Since USRP is just used for transiver, ADC/DAC,  converting RF signal to 
baseband and transmitting baseband signal to GNU Radio for processing, then may 
I produce baseband workload by an Agilent baseband signal generator or even 
Matlab, and then connect GNU Radio with signal generator or Matlab? 


The reason I am thinking about this is that from some analysis, I find the data 
rate of the USB2.0 bus limits the bandwidth of the base band signal to 8 MHz, 
which is not enough for my project. And My focus is just baseband signal 
processing, I want to save money on USRP if I can use existing equipments in 
the 
lab.

Thanks

Hanks


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RE: [Discuss-gnuradio] Can GNU Radio run on TI DSP environment?

2010-07-09 Thread
That's really cool if Linux can run on TI multi-core DSP  TMS320C6474! 

Where can I get this factory Linux, I don't find it  at TI's website. Should I 
ask TI guys for it?

Thanks!

Hanks






发件人: Jeff Brower 
收件人: Hanks 
抄   送: discuss-gnuradio@gnu.org
发送日期: 2010/7/9 (周五) 7:39:30 下午
主   题: Re:  »Ø¸´£º [Discuss-gnuradio] Can GNU Radio run on  TI DSP environment?

Hanks-

> For the  native, factory Linux running on their DSP cores,
> do you mean DSP/BIOS real-time OS?

No, I mean Linux.  It's a big deal for TI -- they should have had a factory 
Linux 10 years ago, but for whatever
reasons they were way late to join the crowd.

-Jeff

> 
> 发件人: Jeff Brower 
> 收件人: Hanks 
> 抄   送: discuss-gnuradio@gnu.org
> 发送日期: 2010/7/9 (周五) 6:41:05 下午
> 主   题: Re: [Discuss-gnuradio] Can GNU Radio run on TI DSP environment?
>
> Hanks-
>
>> I am new to GNU Radio. Currently I am considering to implement basic software
>> radio and signal processing on TI DSP environment, such as TI TMS320C674x and
>> C647x DSPs and the evaluation boards.
>>
>>
>> I know GNU radio are usually running on PC environments for Linux or Window
> OS,
>> but can it also run on TI DSP? If it can, how can I do it?
>
> As a starting point, look here:
>
>  http://beagleboard.org/
>
> In this case GNU radio runs on the ARM core side of an OMAP 3530 device (not 
on
> the DSP core).  OMAP 3xxx devices can
> be found in some smart phones, for example Mot Droid and Palm Pre.
>
> Another area to look into is TI's recent announcment for a native, factory 
>Linux
> running on their DSP cores, for
> example 6-core C6474 device.  I have not heard of a GNU radio port (or any 
>other
> popular open source sw, such as
> Asterisk) but I'm sure people are working on it.
>
> -Jeff
>
>
>


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回复: [Discuss-gnuradio] Can GNU Radio run o n TI DSP environment?

2010-07-09 Thread
Thanks!

For the  native, factory Linux running on their DSP cores, do you mean DSP/BIOS 
real-time OS?

Hanks





发件人: Jeff Brower 
收件人: Hanks 
抄   送: discuss-gnuradio@gnu.org
发送日期: 2010/7/9 (周五) 6:41:05 下午
主   题: Re: [Discuss-gnuradio] Can GNU Radio run on TI DSP environment?

Hanks-

> I am new to GNU Radio. Currently I am considering to implement basic software
> radio and signal processing on TI DSP environment, such as TI TMS320C674x and
> C647x DSPs and the evaluation boards.
>
>
> I know GNU radio are usually running on PC environments for Linux or Window 
OS,
> but can it also run on TI DSP? If it can, how can I do it?

As a starting point, look here:

  http://beagleboard.org/

In this case GNU radio runs on the ARM core side of an OMAP 3530 device (not on 
the DSP core).  OMAP 3xxx devices can
be found in some smart phones, for example Mot Droid and Palm Pre.

Another area to look into is TI's recent announcment for a native, factory 
Linux 
running on their DSP cores, for
example 6-core C6474 device.  I have not heard of a GNU radio port (or any 
other 
popular open source sw, such as
Asterisk) but I'm sure people are working on it.

-Jeff


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[Discuss-gnuradio] Can GNU Radio run on TI DSP environment?

2010-07-09 Thread
Hello,

I am new to GNU Radio. Currently I am considering to implement basic software 
radio and signal processing on TI DSP environment, such as TI TMS320C674x and 
C647x DSPs and the evaluation boards. 


I know GNU radio are usually running on PC environments for Linux or Window OS, 
but can it also run on TI DSP? If it can, how can I do it?

Thanks

Hanks



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