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In Analog Technology, Compare and Contrast the Advantages and Disadvantages of Amplitude Modulation, Frequency Modulation, Phase Modulation, and Quadrature Amplitude Modulation

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Advantages and disadvantages of the following analog modulation techniques:
In analog technology, compare and contrast the advantages and disadvantages of amplitude modulation, frequency modulation, phase modulation, and Quadrature Amplitude Modulation

Amplitude Modulation
When dealing with communication modulation is the process of altering one or more of the three primary parameters of a message signal. Modulation of message signals allow for the signal to be imbedded into a carrier signal that can be physically transmitted. The three primary parameters are amplitude, frequency, and phase. When dealing with analog modulation techniques each one that is used will have advantages and disadvantages. The amplitude modulation (AM) technique is based on the transformation of the highs and lows of a signal wave or its strength. This technique has the advantages of being able to travel long distances by bouncing off of structures as well as the atmosphere. The main disadvantage of this modulation technique is that is highly susceptible to signal interference from other electronic devices and waves creating and unclear signal, these interferences are what is known has noise. Frequency modulation (FM) is that of what its names says it is the altering of the frequency of a baseband signal. Altering the number of times each second that the current changes direction; comes with the advantage of being less susceptible to noise unlike that of AM. Also unlike AM, FM is not able to bounce off of the structures that will be placed in front of it so it has a disadvantage of being a line of sight signal. When dealing with Phase Modulation you are changing the angle between the start point and the point on the waveform as shown. (What is PM, ND) When using this type of modulation the encoding and decoding of a signal becomes more difficult. On the upper hand…...

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