In information technology (IT), most secret messages are sent by

Key Points

• Phase modulation is commonly used for sending secret messages in information technology (IT).
• Phase modulation (PM) is a modulation pattern for conditioning communication signals for transmission.
• It is one of the most effective methods to encode digital data onto an analog carrier signal.
• In phase modulation, the phase of the carrier wave is varied in accordance with the message signal.

Additional Information

• Phase modulation is a type of angle modulation, similar to frequency modulation (FM).
• It is widely used in digital signal processing, particularly in communication systems.
• Phase modulation is less susceptible to noise and interference compared to amplitude modulation (AM).
• It is used in various applications, including satellite communications, radio broadcasting, and data transmission systems.
• Advanced encryption techniques can be employed along with phase modulation to enhance the security of transmitted messages.