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drom / OFDM

Orthogonal Frequency Division Multiplexing pipeline
MIT License
27 stars 17 forks source link

add FEC #17

Open devang opened 6 years ago

devang commented 6 years ago

Viterbi

devang commented 6 years ago

We can use: https://github.com/gnuradio/gnuradio/pull/660

drom commented 6 years ago

@devang agree, that we have to think about FEC. Viterbi is not the best FEC for OFDM. Because OFDM has a block nature -- block code seems like a better choice. I am big fan of LDPC. Soft-bit LDPC decoder on 60+ bit block size has BER/SNR properties very close to Shannon limit. Also if we aim to make OFDM symbol size configurable, we can generate reasonable LDPC code matching OFDM symbol size. I have another repo for LDPC project ;) https://github.com/drom/LDPC