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Hello,
I know I was the one who submitted the code in first place, and as far as I know, I implemented it according to the IEEE 802.11 standard.
According to the IEEE 802.11 section 17.3.5.6 the d…
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Hi -- I am trying to use a LDPC encoder and decoder chain as a standalone binary, and I encountered the all 0 outputs of LDPC decoder. As mentioned in #53 , although I have fixed the BPSK mapping, it …
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Dear all,
I was trying to transmit and receive BPSK-modulated burst at the same TX and RX frequency, which was set using digital frequency offset (NCO) and I believe I found some bug as it comes to…
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I have noticed a high CPU usage on a single thread when running the ADS-B demodulator. After a closer look at the code in `adsbdemodsink.cpp` it seems the sync sequence correlation could be optimized …
f4exb updated
3 years ago
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Hello All,
Please anybody can you help me with the BY70-2 satellite?
I cannot understand why I receive data when the satellite is not transmitting
While when it transmits I do not get any data.
Th…
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Hi Dani,
Fantastic work on the 'next' version. Am pulling frame from lots of sats that I couldn't before.
At the moment I'm using an airspy mini on Manjaro Linux on an RPi4 to run gqrx and using u…
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Hi Dani,
On some occasions, we see "Could not parse telemetry beacon no subconstruct matched".
In those cases where a match is obtained _and_ there are multiple possible transmission formats i…
N6RFM updated
3 years ago
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Hi,
Is it possible to convert from a satellite beacon wrongly recorded in FM mode to Phase modulation knowing the baud rate ?
Sorry if this is not the place to ask such a basic question.
Bernard
f6bvp updated
4 years ago
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I am a rookie in new radio.
In plot_BLER_vs_SNR.m ,I find the LLR vector be caculated by your method(In line 151-154).
But I find some paper,the LLR in QPSK modulation,use 'ln' to caculate,and you d…
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Good morning all,
Just wanted to share my experiments to decode BOBCAT-1 that uses 1k2 FSK AX.100 Mode 5.
I am not completely sure if the output is correct, please share your thoughts.
Here t…