MONOCYCLE POSITION MODULATION,
Abstract
This report describes a new form of time position modulation designed to obtain an increase in the rate of transmission of binary digital data without extending the bandwidth. The system known as Monocycle Position Modulation (MPM) is described, and its application to the transmission of binary digital data is discussed. An inherent characteristic of the MPM signal is that it contains synchronizing information that has not required additonal time or power to transmit. A method for extracting and using this synchronizing data at the receiver is given. This method uses a novel analog memory for frequency control that has both short time response under dynamic conditions and infinitely long time memory under static conditions. Another desirable characteristic of the memory is its ability to adapt to operational changes. An analysis of the spectral power distribution of a randomly modulated MPM signal is derived and the results interpreted with respect to system performance. The performance obtained during laboratory tests of an experimental MPM system operating directly from a binary digital signal stream at 3,000 bits/second is described. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1965
- Accession Number
- AD0615965
Entities
People
- William A. Huber
Organizations
- United States Army Communications-Electronics Command