Gr4-packet-modem
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gr4-packet-modem is a packet-based modem that runs on GNU Radio 4.0. It was implemented as an example of a complete digital communications system in GNU Radio 4.0. gr4-packet-modem can be used to test the GNU Radio 4.0 runtime in a realistic use case, and as an example of how to write blocks and applications in GNU Radio 4.0. The modem implements a generic protocol rather than an existing real world protocol, but it could be customized to implement a concrete protocol.
The following pages are a "theory of operation" documentation that describes how the modem works. They are intended to supplement the source code and describe the system at a higher level.