Hi Yaşar - To address your first paragraph / question: the GR OFDM has
not been updated significantly since that post. It can still handle
FFT length of 64: yes! It might be able to handle 128 or higher, or 32
or lower, out of the box. The error you provide shows that it is not
able to handle the l
Sinan,
Unfortunately, an LDPC decoder with enough throughput for DVB-T2
(up to 50 Mbps) can't be realized on a general purpose CPU. You have to
use a GPU or FPGA. Because of that, there's no DVB-T2 receiver in GNU Radio.
If you're willing to use commercial receivers, I have a fully tested
Hi Marcus,
Yes, after some trial with the provided OFDM .grc files of the GNU Radio, I
agree with you on the flexibility of the occupied bins and pilot tones.
However, I have an issue. When, I try FFT length input that is greater than
64, I get "]: Buffer too small for
min_noutput_items" error. Af
OFDMA is a higher-level concept. Since it doesn't really apply to
IEEE802.11, no, gr-ieee802-11 isn't the best place to add it to.
Use GNU Radio's built-in OFDM framework. It's very flexible. From a
transmitter's point of view, OFDM is a MAC layer choice that only
affects the subcarriers used in e
Hi Marcus,
Thanks for the reply. I have an additional question. Is it possible to
implement OFDMA on the top of the gr-ieee802-11 or I need to begin with
basics like benchmark OFDM or raw OFDM. If my intention is to implement
OFDMA, what would you recommend to begin with as a reference?
Best,
Sin
Hi Sinan,
GNU Radio itself comes with an OFDM implementation. Since it's all
software defined Radio, it's totally agnostic of the bandwidth you use
it with, assuming sufficient compute power.
Also, there's gr-ieee802-11 as you might have noticed, which implements
the WiFi PHY.
Best regards,
Mar
Hello,
I am wondering, is there any good reference implementation of wideband OFDM
(up to 20 MHz) available that you would recommend?
Best,
Sinan
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