Page 321 - Satellite Communications, Fourth Edition
P. 321
Digital Signals 301
Figure 10.14 (a) QPSK modulator; (b) waveforms for (a).
TABLE 10.1 QPSK Modulator States
p i (t) p q (t) QPSK
1 1 cos 0 t sin 0 t 22 cos( 0 t 45 )
1 1 cos 0 t sin 0 t 22 cos( 0 t 45 )
1 1 cos 0 t sin 0 t 22 cos( 0 t 135 )
1 1 cos 0 t sin 0 t 22 cos( 0 t 135 )
