Re: [Discuss-gnuradio] gr_unpacked_to_packed_bb, modulation

[Achilleas Anastasopoulos]

I think you are making wrong use of the unpacked_to_packed block:

Your source is a file with bytes.
These should be considered "packed"
(i.e., bits are packed into a byte).

Thus you need to unpack them using
packed_to_unpacked_bb(2,GR_MSB_FIRST)
The output of this block will be bytes, each having
only 2 bits worth of data in them, sop they can be used
as inputs to the lookup table...

Achilleas