Each stream has been shiffted with the xlating block.
The intention is to "split" a 20 MHz wide analog channel into two of 10 MHz.
Each 10 MHz channel transmit its own ofdm frame.
I attached the flowgraph for more details.
thanks in advance.
On 15 December 2015 at 17:42, Martin Braun-2 [via GnuRadio] <
[email protected]> wrote:
> tP indicates you're using corrupt tagged streams, maybe your add block
> is overlaying them? I'm also not entirely sure what you mean by
> 'simultaneous parallel transmissions'. Are they on different
> frequencies? Are you mixing them together in baseband?
>
> Cheers,
> Martin
>
>
> On 15.12.2015 04:10, Saulo Queiroz wrote:
>
> > Hi all,
> >
> > I'm trying to Tx a same tagged stream simultaneously through two analog
> > orthogonal channels.
> >
> > The flow path of each stream copy is: resampling, adjust tag lenght and
> > xlating FFT filter (with shifting). After this I take the output of each
> > filter and put into and add block then to the USRP sink. I also do the
> > reverse process at the Rx side.
> > With some packets are successfuly receive but with so many losses. At
> > the Tx side I get many "tP". Any tip on how to set simultaneous parallel
> > transmissions without this?
> >
> > I'm using gr-ieee80211 (thanks Bastian and team :) that has worked
> > nicely with the single channel scenario.
> >
> > thanks in advance
> >
> > BR
> >
> > --
> > Saulo Jorge bq
> > - "Beware of bugs in the above code; I have only proved it correct, not
> > tried it."
> > Donald Knuth.
> >
> >
> > _______________________________________________
> > Discuss-gnuradio mailing list
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> > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> >
>
>
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--
Saulo Jorge bq
- "Beware of bugs in the above code; I have only proved it correct, not
tried it."
Donald Knuth.
wifi_tx_rx_loopback.grc (134K)
<http://gnuradio.4.n7.nabble.com/attachment/57298/0/wifi_tx_rx_loopback.grc>
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