PN Correlator

PN code sequential search correlator.

Receives complex baseband signal, outputs complex correlation against reference PN code, one sample per PN code period. The PN sequence is generated using a GLFSR.

Parameters

Degree

Degree of shift register must be in [1, 32]. If mask is 0, the degree determines a default mask (see digital_impl_glfsr.cc for the mapping).

Mask

Allows a user-defined bit mask for indexes of the shift register to feed back.

Seed

Initial setting for values in shift register.

Example Flowgraph

Insert description of flowgraph here, then show a screenshot of the flowgraph and the output if there is an interesting GUI. Currently we have no standard method of uploading the actual flowgraph to the wiki or git repo, unfortunately. The plan is to have an example flowgraph showing how the block might be used, for every block, and the flowgraphs will live in the git repo.

Source Files

C++ files

pn_correlator_cc_impl.cc

Header files

pn_correlator_cc_impl.h

Public header files

pn_correlator_cc.h

Block definition

digital_pn_correlator_cc.block.yml