The Detection of Pcm/fm
نویسنده
چکیده
Introduction The PCM/FM detection system is shown in Fig. 1. The PCM signal is shaped using a premodulation filter, then frequency modulated and transmitted through a channel with additive gaussian noise. The received signal and noise are shaped by a predetection filter. The PCM waveform is recovered using an FM demodulator such as the discriminator, PLL or FCF, and then passed through a PCM Detector. Two PCM detectors are considered in this paper: the integrate and dump filter(2,3) and a gaussianshaped filter(1) detector.
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