Special characteristics of digital modulations
Abstract
The importance of the bandwidth required for transmitting the chosen signaling or modulation technique in evaluating efficiency of a communication system is noted. The direct relation between bandwidth and the power spectral density (PSD) of the signaling scheme makes efficient analytical methods for calculating the PSD essential to specifying the spectral occupancy of the transmission channel. Several techniques for calculating the PSD of synchronous data pulse streams are reviewed.
- Publication:
-
Deep Space Telecommun. Systems Eng.
- Pub Date:
- July 1982
- Bibcode:
- 1982dsts.nasa...23S
- Keywords:
-
- Bandwidth;
- Modulation;
- Power Spectra;
- Signal Transmission;
- Spacecraft Communication;
- Autocorrelation;
- Markov Processes;
- Pulse Communication;
- Sequencing;
- Communications and Radar