How do you reduce the PAPR with existing block in GRC ?
I've tried with Scrambler->Encoder CCSDS->Interleaver but it doesn't
seems to work. I'm still not having any signal at the output of the OFDM
receiver.
Guillaume
Le 27/03/2018 à 11:58, Ron Economos a écrit :
Yes, I think the whitener d
Yes, I think the whitener does the trick. If you plot the PAPR of band
limited white noise, it's pretty much the same curve.
Ron
On 03/27/2018 02:36 AM, Müller, Marcus (CEL) wrote:
Oooh, that's a nice plot!
This is way better than I would have anticipated. Can I attribute that
to awesome white
Oooh, that's a nice plot!
This is way better than I would have anticipated. Can I attribute that
to awesome whitening properties of the code itself and following
scramblers/interleavers?
Marcus
On Tue, 2018-03-27 at 02:31 -0700, Ron Economos wrote:
> CCDF (Complementary Cumulative Distribution Fun
On Fri, 2018-03-23 at 14:21 -0700, Martin Braun wrote:
> If you've
> increased the number of carriers, PAPR also goes up (a bit).
Yep, by the same factor as you increase the number of carriers (proof
idea: time-symbol with worst PAPR is the discrete dirac over the vector
of FFT length N. That has
On 03/16/2018 09:33 AM, guillaume.toc...@orange.com wrote:
> Hello all,
>
> I want to make a flow graph for transmitting and receiving OFDM
> modulated data. To be precise, I want to do a LTE-M "like"
> transmission/reception, so I am trying to transmit data with a BW of
> 1.08 MHz OFDM.
> To do s
Hello all,
I want to make a flow graph for transmitting and receiving OFDM
modulated data. To be precise, I want to do a LTE-M "like"
transmission/reception, so I am trying to transmit data with a BW of
1.08 MHz OFDM.
To do so, I use the following configuration : samp_rate = 1.92 MHz, fft
len
Jenny,
we have a limit in place for packet sizes, which depends on your system.
If you type sysctl -a, it'll say something like
kernel.shmmax = 18446744073692774399
100 OFDM symbols seems pretty long, though. If your packet length is 96,
as in the example, that means a total packet length of 10
Hi,
I'm using the examples rx_ofdm.grc and tx_ofdm.grc together to transmit and
receive packets over the air. Both work over a simulated channel, but when
I actually transmit and receive over the air, I get the error:
*"Detected a packet larger than max frame size (100 symbols)"*
I saw the prev
Hi,
I'm using the examples rx_ofdm.grc and tx_ofdm.grc together to transmit and
receive packets over the air. Both work over a simulated channel, but when
I actually transmit and receive over the air, I get the error:
*"Detected a packet larger than max frame size (100 symbols)"*
I saw the prev
Hi,
I've problem to use a large packet_len size (ie; 1500 bytes) in OFDM
Flowgraph as in the digital folder examples. I got this error:
sched: is requesting more input data
than we can provide.
ninput_items_required = 34
max_possible_items_available = 31
If this is a filter, consider red
Hi everyone,In our group, we are trying to experiment with OFDM and want to setup an OFDM Tx/Rx chain and performs experiments and evaluate several synchronization (timing/frequency) and equalization algorithms. We finally want to be able to transmit/receive OTA at
2.4 Ghz ISM band. I saw some st
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