# An ISDB-T receiver implementation

**URL:** <https://www.ruby-forum.com/t/an-isdb-t-receiver-implementation/242041>\
**Category:** GNU Radio\
**Created:** [May 21, 2015, 8:17pm UTC](https://www.ruby-forum.com/t/an-isdb-t-receiver-implementation/242041 "2015-05-21T20:17:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Detlef\_R](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/58f4c7/32.png) [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\
**Post date:** [May 21, 2015, 8:17pm UTC](https://www.ruby-forum.com/t/an-isdb-t-receiver-implementation/242041/1 "2015-05-21T20:17:47Z")

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Hi everybody,

Some months ago we started working on an ISDB-T receiver for GNU Radio.  
We  
have reached a point at which it may be useful for other people, so we  
decided to announce to it on the list. The sources may be found on:  
[GitHub - git-artes/gr-isdbt: DTV ISDB-T in GNURadio](https://github.com/git-artes/gr-isdbt).

Although this is an ongoing work, the receiver is now capable of roughly  
two things (examples included):

- Synchronize to the OFDM symbol, equalize, and decode the TMCC signal  
(equivalent to the DVB’s TPS). This has been tested for mode-3  
transmission  
(i.e. 8k OFDM) and several CP lengths, which is what we have available  
here, but it should work with all the modes and CPs.
- Display online the 1-segment video (i.e. the low definition portion  
that  
is generally sent in ISDB-T). Again, this has been tested with the  
transmissions available here in Uruguay.

We are currently working on displaying the rest of the segments, as well  
as  
debugging and improving the rest of the blocks.

Any feedback and/or help is more than welcome!

Best,  
Federico

---

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**Author:** ![cippodelizioso](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/ecc23a/32.png) [@cippodelizioso](https://www.ruby-forum.com/u/cippodelizioso)\
**Post date:** [May 24, 2015, 7:56pm UTC](https://www.ruby-forum.com/t/an-isdb-t-receiver-implementation/242041/2 "2015-05-24T19:56:11Z")

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On Thu, May 21, 2015 at 2:16 PM, Federico L. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
wrote:

> (equivalent to the DVB’s TPS). This has been tested for mode-3 transmission
> 
> Best,  
> Federico

Thanks for letting everyone know, Federico. It’s probably get more  
exposure  
and use if you put it into PyBOMBS so it can be made available on CGRAN:

> **[CGRAN](https://www.cgran.org/)**

See Documentation - Submitting OOT Modules

Tom