Why is frequency modulation superior to amplitude modulation?

In radio transmission, an advantage of frequency modulation is that it has a larger signal-to-noise ratio and therefore rejects radio frequency interference better than an equal power amplitude modulation (AM) signal. For this reason, most music is broadcast over FM radio.

What is the difference between frequency modulation and amplitude modulation?

The main difference between both modulations is that in frequency modulation, the frequency of the carrier wave is modified as per the transmit data, while in amplitude modulation, the carrier wave is modified according to the data.

Where does the amplitude or frequency modulation takes place?

In the frequency domain, amplitude modulation produces a signal with power concentrated at the carrier frequency and two adjacent sidebands. Each sideband is equal in bandwidth to that of the modulating signal, and is a mirror image of the other.

What is the carrier and lower sideband of an amplitude modulated signal?

An amplitude modulated signal has a carrier, an upper sideband, and a lower sideband. The carrier, by itself, contains no information and the information in each sideband is just a mirrored version of that in the other sideband.

What is the difference between frequency and amplitude modulation?

As per the definition, in amplitude modulation, the amplitude of the modulating signal varies as per the carrier signal’s amplitude. The AM signals make use of lower frequencies to transmit information to long distances. While in frequency modulation, the frequency of the modulating signal varies as per the carrier signal’s amplitude.

Which is the upper sideband in a modulation scheme?

is the upper sideband. This is the origin of the term double sideband. When studying and testing analog modulation schemes, it is convenient to use a sinusoid as the message signal. This is a good choice for several reasons.

How are low frequency and high frequency waves modulated?

Through the amplitude modulation, the low-frequency baseband wave is modulated to a high-frequency signal. So, high-frequency signals can transmit over a long distance than that of low-frequency signals. And in the expressions, Ai and Ac represent the amplitudes of two waves while fi and fc are the frequencies of the two waves correspondingly.