3
rd
Generation Rack-
Mount RDMS™
110
Quasonix, Inc.
Examples of the Eye Pattern (PCM/FM) (Figure 183), Constellation (SOQPSK) (Figure 184), Constellation (STC)
(Figure 189 and Figure 190), and Spectrum (Figure 185 and Figure 186) are shown in the associated figures.
Figure 183: PCM/FM Eye Pattern
Figure 184: SOQPSK Constellation
Figure 185: PCM/FM Spectrum Display
Figure 186: SOQPSK Spectrum Display
Multi-h CPM (MHCPM)
The “constellation” for MHCPM, shown in
Figure 187, is synthetic in nature. The waveform is really just a 4-ary
FSK signal with very narrow tone spacing and a smooth pulse shape that produces a very compact spectrum. To
achieve the detection efficiency comparable to single symbol PCM/FM or SOQPSK, the frequencies of the tones
