Which of the following is a common modulation technique used in wireless communication?

Which of the following is a common modulation technique used in wireless communication?

• A. Phase Modulation (PM)
• B. Amplitude Modulation (AM)
• C. Pulse Width Modulation (PWM)
• D. Digital Modulation (DM)

Answer: (B)

Amplitude Modulation (AM) is a common modulation technique used in wireless communication, particularly in analog systems. AM works by varying the strength (amplitude) of the carrier wave in proportion to the information signal that is being transmitted. This technique is well-suited for broadcasting audio signals over long distances, as it allows for effective transmission of sound over radio frequencies. The popularity of AM in wireless communication stems from its simplicity and ease of implementation. AM signals can be transmitted over significant distances and can be received with relatively simple equipment, making it an enduring choice for radio broadcasting. While other techniques such as Phase Modulation (PM) and Digital Modulation (DM) are indeed utilized, they serve specific applications and contexts where their unique properties can be leveraged effectively, such as in digital communications or more advanced modulation schemes. Pulse Width Modulation (PWM) is generally used in applications involving control of power and signal delivery rather than in traditional wireless communication for transmitting data.

Amplitude Modulation (AM) is a common modulation technique used in wireless communication, particularly in analog systems. AM works by varying the strength (amplitude) of the carrier wave in proportion to the information signal that is being transmitted. This technique is well-suited for broadcasting audio signals over long distances, as it allows for effective transmission of sound over radio frequencies.

The popularity of AM in wireless communication stems from its simplicity and ease of implementation. AM signals can be transmitted over significant distances and can be received with relatively simple equipment, making it an enduring choice for radio broadcasting.

While other techniques such as Phase Modulation (PM) and Digital Modulation (DM) are indeed utilized, they serve specific applications and contexts where their unique properties can be leveraged effectively, such as in digital communications or more advanced modulation schemes. Pulse Width Modulation (PWM) is generally used in applications involving control of power and signal delivery rather than in traditional wireless communication for transmitting data.