I believe the GRC "Simple Correlator" is the inverse of the "Simple Framer,"
yet it takes float inputs. What is the proper format of the input data? I see
that the code does some slicing on the input, so I expect the floats to be
positive and negative float values representing ones or zeros respectively.
Asked another way, what is wrong with the simple flowgraph below?
File Source (byte) ->
Simple Framer (Payload Size = 6) ->
Throttle ->
Packed to Unpacked (Byte,1 bit per Chunk, MSB) - This block causes
the bits to be represented as serial bytes. ->
Char to Float (scale 1) ->
Add Const (float, -0.5) This removes the DC bias to
facilitate slicing. ->
Simple Correlator (Payload Byte Size = 6) ->
File Sink (byte).
No data comes out of the Simple Correlator, but using GUI sinks, I see that all
the other blocks work.
There is mention on the Internet that the Simple Correlator requires 8x
oversampling. Is that true? I only need correlation at the bit level, not at
the symbol timing. Is the Simple Correlator the wrong block to undo the Simple
Framer?
-Thanks
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