Re: [Discuss-gnuradio] How To Change Tx Frequency During Transmission

[Triet Vo-Huu]

Hi Ly, you might consider as an alternative solution shifting the frequency by 
multiplying with a sine wave if your application can sample at high rate.

----- "Nguyễn Văn Lý" <address@hidden> wrote:

> Hi Marcus,
> 
> I use bladeRF hardware, not USRP. So I have "osmocom" sink and source
> blocks in my flow graph. Do you have any idea about this.
> 
> Thank you very much,
> 
> 
> Best Regards,
> Van-Ly
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> Van-Ly Nguyen,
> Research Assistant,
> Signals and Systems Laboratory - SSL
> Faculty of Electronics and Telecommunications - FET
> 
> University of Engineering and Technology - UET
> 
> Vietnam National University, Hanoi - VNU
> 
> 
> Tel: (+84) 97 881 9406
> 
> 
> 
> On Wed, Dec 3, 2014 at 10:28 PM, Marcus Müller <
> address@hidden > wrote:
> 
> 
> 
> Hello Van-Ly,
> 
> what hardware are you using?
> If you're using any USRP, then the gr-uhd [1] blocks [2] will allow
> you to tune using stream tags, asynchronous messages and method calls.
> From your problem description, it sounds like using stream tags is
> your best choice. If you want to know more about how to use these, I
> recommend going through the new guided tutorials [3], especially part
> 5 (which kind of relies on you having read the first four parts, but
> since I think you're already somewhat friends with GNU Radio, this
> might not be too much work).
> 
> Greetings,
> Marcus
> 
> 
> [1] http://gnuradio.org/doc/doxygen/page_uhd.html
> [2] sink:
> http://gnuradio.org/doc/doxygen/classgr_1_1uhd_1_1usrp__sink.html
> [3]
> http://gnuradio.org/redmine/projects/gnuradio/wiki/Guided_Tutorials
> 
> 
> 
> On 12/03/2014 04:21 PM, Nguyễn Văn Lý wrote:
> 
> 
> 
> 
> Hello everyone,
> 
> Does anyone know how to change Tx frequency during transmission. I
> mean the
> transmitter operates at f0 GHz in some interval of time and then
> change to
> operate at f1 GHz.
> 
> Sincerely,
> Van-Ly
> 
> Van-Ly Nguyen,
> Research Assistant,
> Signals and Systems Laboratory - SSL
> Faculty of Electronics and Telecommunications - FET
> University of Engineering and Technology - UET
> Vietnam National University, Hanoi - VNU
> 
> Tel: (+84) 97 881 9406
> 
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