There is a PAPR reduction block in GNU Radio, but it's specific for
DVB-T2. It uses a tone reservation algorithm where excess power is
dumped into unused/reserved carriers.
https://github.com/gnuradio/gnuradio/blob/master/gr-dtv/lib/dvbt2/dvbt2_paprtr_cc_impl.cc
Ron
On 6/23/20 08:36, Derek Ko
Dear Brian, Marcus, and Derek,
Your help and advice is greatly appreciated, thank you very much. I will
look into how the PAPR might be reduced and if I do come up with something
which can be contributed to GNU radio, I will certainly look into that.
Take care,
Manav
On Tue, Jun 23, 2020 at 4:36
To add on to what Marcus and Brian have said, one of the ways of
slightly reducing this problem is Crest Factor Reduction. It would be
very useful to have some of the standard CFR algorithms added to GNU
Radio. Peak Cancellation is one that has looked promising to me. Peak
Windowing and Noise S
On Tue, Jun 23, 2020 at 10:38 AM Manav Kohli wrote:
> Hello,
>
> This problem is visualized here:
> https://www.dropbox.com/s/w7kdmf9dewwdomx/20M_2974_20_15_nocal_packet_time_tx.png?dl=0
>
> This is an OFDM packet consisting of 6 symbols: the default sync word 1&2,
> SIG field and three data symb
Hi Manav,
the phenomenon you're referring to is called PAPR,
peak-to-average-power-ratio, and it's really *the* standard problem for
OFDM. There's a wealth of information out there on PAPR reduction. Must
be thousands of papers on IEEE Xplore alone[1]!
As you can imagine, that's because the
Hello,
This problem is visualized here:
https://www.dropbox.com/s/w7kdmf9dewwdomx/20M_2974_20_15_nocal_packet_time_tx.png?dl=0
This is an OFDM packet consisting of 6 symbols: the default sync word 1&2,
SIG field and three data symbols. The data symbols are QPSK modulated and
the sync words are BP
