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Re: [Discuss-gnuradio] Sending file through tx_ofdm.grc in gnuradio 3.7.


From: Martin Braun (CEL)
Subject: Re: [Discuss-gnuradio] Sending file through tx_ofdm.grc in gnuradio 3.7.1
Date: Wed, 23 Oct 2013 19:05:08 +0200
User-agent: Mutt/1.5.21 (2010-09-15)

On Wed, Oct 23, 2013 at 10:06:57PM +0800, ashish mishra wrote:
>  I want to transmit a file through tx_ofdm.grc model and receive it in using
> rx_ofdm.grc. Presently this simulation takes in a vector source of packet
> length as input and it creates tags for it.
> 
> I am able to receive these vectors correctly using rx_ofdm.grc

Hi Ashish,

and first of all, thanks for testing the OFDM codes.

> Now I want to send file as data but I dont find any block which adds tags to
> file.
> 
> 
> Alternately, can someone suggest the method of converting the file content 
> into
> vectors of packet length configurable by the user so that it can be entered
> into the vector source.

There's no simple way to do this, which I believe is an omission. I've
created http://gnuradio.org/redmine/issues/603 and will add a block
soon.

Until then, you'll have to load the block into an array, split that into
manageable chunks and pass all of them as tagged streams to the
vector_source (in Python land).

Cheers,
MB

-- 
Karlsruhe Institute of Technology (KIT)
Communications Engineering Lab (CEL)

Dipl.-Ing. Martin Braun
Research Associate

Kaiserstra├če 12
Building 05.01
76131 Karlsruhe

Phone: +49 721 608-43790
Fax: +49 721 608-46071
www.cel.kit.edu

KIT -- University of the State of Baden-W├╝rttemberg and
National Laboratory of the Helmholtz Association

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