# ISDB-T Modulation?

**URL:** <https://www.ruby-forum.com/t/isdb-t-modulation/230558>\
**Category:** GNU Radio\
**Created:** [June 23, 2014, 6:37pm UTC](https://www.ruby-forum.com/t/isdb-t-modulation/230558 "2014-06-23T18:37:48Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![jason\_sam](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/7993a0/32.png) [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\
**Post date:** [June 23, 2014, 6:37pm UTC](https://www.ruby-forum.com/t/isdb-t-modulation/230558/1 "2014-06-23T18:37:48Z")

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I am aware that ATSC, and various forms of DVB-T/2 modulators exist in  
GNURadio both with standard and custom blocks; but is there any active  
development or possibility of ISDB-T modulation? What exactly would need  
to  
be done in order to achieve it? It doesn’t seem all-too different from  
DVB-T in the sense that it wouldn’t be a from-scratch effort.

Thanks in advance.

- Jordan

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**Author:** ![jowijo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e95f7d/32.png) [@jowijo](https://www.ruby-forum.com/u/jowijo)\
**Post date:** [June 23, 2014, 10:01pm UTC](https://www.ruby-forum.com/t/isdb-t-modulation/230558/2 "2014-06-23T22:01:09Z")

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Hi Jordan,  
I live in Brazil and I always tried to find efforts developing an ISDB-T  
modulator, but never find it.  
Of course it’ll not be a from-scratch effort, as some blocks are already  
in gnuradio.

Best regards,  
Rafael D.

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<div class="post-metadata">

**Author:** ![jowijo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e95f7d/32.png) [@jowijo](https://www.ruby-forum.com/u/jowijo)\
**Post date:** [June 23, 2014, 11:13pm UTC](https://www.ruby-forum.com/t/isdb-t-modulation/230558/3 "2014-06-23T23:13:04Z")

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Hi Jordan,

I remember a group from Brasil presenting a ISDB-T modulator implemented  
in gnuradio when I attended wireless innovation forum in 2012. The  
presentation is here:  
[http://groups.winnforum.org/europe\_papers\_wednesday#2.3](http://groups.winnforum.org/europe_papers_wednesday#2.3), A Software  
Defined Radio Approach for Digital Television ISDB-T Transmitters. The  
project was done by the university for the government to evaluate the  
standard. Some months ago I was looking for sourcecode and I realized  
that it was not released to the public.

ISDB-T should not be hard to implement except few modules which are  
specific, among them being the Band Segmented OFDM.

Regards,

Bogdan

On Monday, June 23, 2014 11:00 PM, Rafael D. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
wrote:

Hi Jordan,  
I live in Brazil and I always tried to find efforts developing an ISDB-T  
modulator, but never find it.  
Of course it’ll not be a from-scratch effort, as some blocks are already  
in gnuradio.

Best regards,  
Rafael D.