| Summary: | Approved for public release; distribution is unlimited === This report discusses the theory, design, implementation and testing of a personal computer-based Multi-Frequency Modulation (MFM) packet communications system. Transmitter/receiver programs provide software drivers for D/A and A/D boards and perform symbol encoding, modulating, demodulating and decoding. The design and construction of a polarity coincidence correlator for receiver packet synchronization is presented. Experimental results show that the implemented MFM communication system conforms to theoretical analysis with acceptable bit error. Results also show the MFM can be uniquely adapted to a specific channel. === http://archive.org/details/implementationof00gant === Lieutenant, United States Navy
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