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Module 4: Pulse Modulation-I

20247m

Compare Pulse Amplitude Modulation (PAM), Pulse Position Modulation (PPM) and Pulse Code Modulation (PCM) with their applications.

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PAM: Sample amplitude ∝ m(t)m(t), generation via FET switch, BW fsf_s, noise-sensitive. PPM: Pulse position varies, constant amplitude, better than PAM, needs sync. PCM: PAM→quantize→binary (8-bit), BW nfsn f_s large, high immunity, TDM. Applications: PAM backbone, PPM telemetry, PCM telephony 64kbps, CD. Table BW fsf_s, fsf_s, nfsn f_s; noise low, medium, high.

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