George Nychis wrote:
Using the FIR with time reversed complex conjugate of the desired input
signal:
http://cyprus.cmcl.cs.cmu.edu/matched_filter/graphs/mf_fir_conjugate.jpg
Using the "matched filter block" that uses the complex/real-wise inner
product:
http://cyprus.cmcl.cs.cmu.edu/matched_filter/graphs/mf_block.jpg
The FIR filter method seems to have much better properties, creating a
much larger magnitude in the output.
This is probably a much better comparison:
http://cyprus.cmcl.cs.cmu.edu/matched_filter/graphs/mf_compare.jpg
The difference between what I would consider the maximum noise level of
the inner product method and the correlation peak is: 160-45=115
For the FIR filter, 225-75=150.
Just approximations.
- George
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