carry information as well as to generate other pulse modulations.
Frequency modulation have some advantages over amplitude modulation, FM is not sensitive to the amplitude noise, and have high efficient use of transmitted power
Explain with diagram the technique Pulse-width modulation?
Pulse-Amplitude Modulation
advantage of pulse position modulation
In Pulse Amplitude Modulation, amplitude of pulse varies with signal. Theoretically in analog modulation there infinite levels of amplitudes or continuous amplitude. Two level PAM is digital modulation where only 2 number of levels are there. Thus signal is quantized to two discrete levels.
Generally pulse amplitude modulation (PAM) is trasmitted as a series of DC levels and are mostly used in wired trasmissions (DC is not effective wirelessly).
Pulse width mod, pulse amplitude mod, pulse position mod, pulse code mod.
PAM-pulse Amplitude Modulation It encodes information in the amplitude of a sequence of signal pulses. PPM-Pulse Position modulation PWM-Pulse Width Modulation.It results in variation of average waveform.
ADVANTAGES OF IDS
AM - Amplitude Modulation FM - Frequency Modulation
QAM is a combination of phase modulation & amplitude modulation.
8000 Hz