| 摘要 |
<p>A coherent phase shift keyed demodulator [Figures 1, 2 (14); Figures 9-12] provides improved performance and simplified circuitry through the use of a reference vector signal generator [Figures 2, 10 (78)] which employs an intermediate reference vector (V2) generated from the phase [Figures 2, 9 (60, 62)] of an incoming carrier signal which, under certain conditions, is reversed in phase prior to being combined with a previous value (VRold) of the reference vector to generate an updated reference vector signal (VRnew). The demodulator also includes apparatus [Figure 10 (66)] to perform concurrent carrier detection and bitsynchro- nization operations.</p> |
