Envelope fluctuation statistics of filtered PSK and other digital modulations
Abstract
A Monte Carlo simulation study is presented of RF envelope fluctuations associated with different digital modulations. Simulations and statistical analyses of these variations are conducted for both filtered PSK and QPRS. The primary fluctuation measure, D, is the dynamic range, in decibels, between the 10th and 90th percentiles of the RF envelope. Numerical results show the tradeoff between envelope constancy and spectrum efficiency among the most widely used digital radio approaches. For QPRS modulations, D is typically in the range 11-16 dB; for heavily filtered PSK, the range of D lies roughly 6 dB lower, but other sources of distortion are more prominent.
- Publication:
-
IEEE Transactions on Communications
- Pub Date:
- April 1979
- Bibcode:
- 1979ITCom..27..750G
- Keywords:
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- Digital Filters;
- Fluctuation Theory;
- Phase Shift Keying;
- Radio Filters;
- Signal Fading;
- Bandwidth;
- Emission Spectra;
- Frequency Response;
- Graph Theory;
- Nonlinear Equations;
- Phase Modulation;
- Radio Communication;
- Radio Transmitters;
- Random Signals;
- Statistical Analysis;
- Communications and Radar