Hi everyone,
I'm trying to learning the algorithm of the correlator in generic_mod_demod.py.
Then use the similar algorithm in my own block.
In the file digital_correlate_access_code_bb.cc, according to my understanding,
the original algorithm is compare each bit of the 8-Byte access code with the
default 8-Byte access code. If the wrong bits is less than 12 bits (the
threshold), then it is decided as "access code found".
I wrote a file to detect access code, too. I compared each of the 8-Byte with
the default access code. If the correct bits is more than (64bits - 12 bits),
then it is decided to be found.
But when I us my program, when decoding the same data, I can always found more
than the original method. For instance, when I use benchmark's original method,
I can get n_rcvd=570 pkt, which means in the generic_mod_demod correlator, 570
access code are found. But my program found 577.
Has anybody been study the correlator block before? and see if there is a
misunderstanding in my work?
Thanks in advance!
Ada
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