18 Questions
What is the purpose of modulation in a communication system?
To change the carrier signal in a unique way
Which term refers to allowing two or more signals to share the same medium or channel?
Multiplexing
What is another name for the process of demodulating a carrier signal to extract the original baseband signal?
Detection
Which process converts individual baseband signals into a composite signal for modulation at the transmitter?
Multiplexing
What is the role of a demultiplexer in a communication system?
To convert the composite signal to individual baseband signals
Which basic modulation techniques are covered in the text?
Amplitude Modulation and Phase-Shift Keying
What is baseband transmission?
Transmitting voice, video, or digital signals directly into the medium
What is the purpose of modulation?
To convert baseband signals into high-frequency signals
What is a carrier signal in communication systems?
The signal used to modulate the baseband information signal
What is a modulating signal?
The message that regulates the carrier
Why are speech and music signals typically modulated?
To make them travel longer distances
What is the purpose of multiplexing in communication systems?
To combine multiple signals into one medium
What is the purpose of modulation in a communication system?
To allow baseband signals to modulate higher frequency carrier waves
In the context of communication systems, what is a carrier signal?
A higher-frequency signal that carries the information signal
Which term refers to the process of using a baseband signal to modify a higher-frequency carrier signal?
Modulation
What type of signals consist of both electric and magnetic fields in communication systems?
Radio-frequency waves
How are relatively low frequency information signals transmitted in radio communication?
Through modulation with a carrier wave
What is the purpose of multiplexing in communication systems?
To increase the number of baseband signals that can be transmitted simultaneously
Explore the concept of baseband transmission in communication systems, where original voice, video, and digital signals are directly inserted into the medium. Learn about the need for modulation when baseband signals are incompatible with the medium.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
