Sideband Lock SCPDM Modem for Simultaneous Voice and Data Communications
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AbstractA modem technique for simultaneous transmission of voice and digital data is presented. The salient feature of this technique is the use of quadrature carrier multiplexing of a suppressed clock pulse duration modulation (SCPDM) signal with a biphase NRZ data stream. A novel method for separating the voice and data components at the receiver is described. Data bit error rate and voice intelligibility test results are presented and discussed.
SponsorsInternational Foundation for Telemetering