Re: [Discuss-gnuradio] how to generate a periodic pulse

Hi all,

I have the same doubt. I want to generate a pulse (with a duty cycle
less than 50%) and I do not know how to do it.

I saw gr.sig_source_x but this only generate pulses at 50% duty cycle.

I tried to multiply several squares pulses at different frequencies and
it works, I get a pulse of 12.5% duty cycle for example but it is
semi-random since all signal generators are not coherent.

Please Can somebody help me to generate a pulse signal which I can
change the pulse width?

Thanks,
Jorge.

Karthik-28 wrote:
>
> On Mon, Feb 9, 2009 at 2:11 AM, Bruhtesfa Ebrahim
> <lists@ruby-forum.com>wrote:
>
>> Hey all,
>>
>> I want to generate a periodic rectangular pulse(of low duty cycle) from
>> one USRP and receive it using another USRP operating simultaneously.
>>
>> So, is there some built in function to generate such a pulse?
>> Also,what filter do i need to apply before connecting the pulse source
>> to Usrp sink?
>>
>> Thanks!
>>
>> Bruhtesfa
>> --
>> Posted via http://www.ruby-forum.com/.
>>
>>
>> _______________________________________________
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>>
>
> You can write your own block if you aren't able to find something that you
> can plug in from gnuradio. There is a source gr.sig_source_x which
> generates
> square pulses, which you can modify to suit your requirements. The actual
> period of the waveform coming out of the USRP will depend on the length of
> the sequence and what your interpolation setting is. However, that is
> something that you can work out.
>
> Karthik
>
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>
>

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