[Discuss-gnuradio] sync_word of ofdm transmission

[Shi Yang]

Dear all,

I created a simple flow graph for ofdm transmission. My problem is, 
how to set the value of pilot symbols and sync words? Since they are 
basically just symbols that are already known for some certain 
function, any random values, as long as the form are correct, should 
work, right? But what is sync_word2 for? After setting it my flow 
graph could not work (without that it worked just fine). And why it 
does not need to fill with zeros on alternating carriers, since the 
preamble is repeated twice? The grc file is attached.

Looking forward to your help.

Yang

test_tx.grc
Description: Binary data

test_tx.py
Description: Text Data