Baseband Transmission in Communication Systems
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Questions and Answers

What is the purpose of modulation in a communication system?

  • To convert the baseband signal to a composite signal
  • To amplify the baseband signal
  • To extract the original baseband signal
  • To change the carrier signal in a unique way (correct)

Which term refers to allowing two or more signals to share the same medium or channel?

  • Multiplexing (correct)
  • Demodulation
  • Detection
  • Amplification

What is another name for the process of demodulating a carrier signal to extract the original baseband signal?

  • Amplification
  • Multiplexing
  • Modulation
  • Detection (correct)

Which process converts individual baseband signals into a composite signal for modulation at the transmitter?

<p>Multiplexing (A)</p> Signup and view all the answers

What is the role of a demultiplexer in a communication system?

<p>To convert the composite signal to individual baseband signals (B)</p> Signup and view all the answers

Which basic modulation techniques are covered in the text?

<p>Amplitude Modulation and Phase-Shift Keying (C)</p> Signup and view all the answers

What is baseband transmission?

<p>Transmitting voice, video, or digital signals directly into the medium (D)</p> Signup and view all the answers

What is the purpose of modulation?

<p>To convert baseband signals into high-frequency signals (A)</p> Signup and view all the answers

What is a carrier signal in communication systems?

<p>The signal used to modulate the baseband information signal (D)</p> Signup and view all the answers

What is a modulating signal?

<p>The message that regulates the carrier (D)</p> Signup and view all the answers

Why are speech and music signals typically modulated?

<p>To make them travel longer distances (C)</p> Signup and view all the answers

What is the purpose of multiplexing in communication systems?

<p>To combine multiple signals into one medium (B)</p> Signup and view all the answers

What is the purpose of modulation in a communication system?

<p>To allow baseband signals to modulate higher frequency carrier waves (C)</p> Signup and view all the answers

In the context of communication systems, what is a carrier signal?

<p>A higher-frequency signal that carries the information signal (C)</p> Signup and view all the answers

Which term refers to the process of using a baseband signal to modify a higher-frequency carrier signal?

<p>Modulation (B)</p> Signup and view all the answers

What type of signals consist of both electric and magnetic fields in communication systems?

<p>Radio-frequency waves (D)</p> Signup and view all the answers

How are relatively low frequency information signals transmitted in radio communication?

<p>Through modulation with a carrier wave (B)</p> Signup and view all the answers

What is the purpose of multiplexing in communication systems?

<p>To increase the number of baseband signals that can be transmitted simultaneously (B)</p> Signup and view all the answers

Flashcards

Modulation

The process of changing a carrier signal in a unique way to carry information.

Multiplexing

The process of combining multiple signals onto one medium.

Demodulation

The process of extracting the original baseband signal from a modulated carrier signal.

Radio-frequency waves

Signals that contain both electric and magnetic fields, used for radio communication.

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Baseband signals

Low-frequency signals, such as voice, video, or digital data.

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Carrier signal

A high-frequency signal used to carry baseband information.

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Modulating signal

The original information signal that modifies a carrier signal.

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Multiplexer

A device that combines multiple baseband signals into a composite signal for modulation.

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Demultiplexer

A device that separates a composite signal into individual baseband signals after demodulation.

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Baseband transmission

The process of transmitting voice, video, or digital signals directly into the medium without modulation.

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Modulation for long-distance transmission

Transmitting signals over long distances by converting low-frequency baseband signals into higher frequency carrier waves.

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Multiplexing in communication systems

Combining multiple baseband signals into one medium for efficient transmission.

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Modulation in communication systems

A process that allows baseband signals to modulate high-frequency carrier waves for efficient transmission.

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Carrier signal in communication systems

A high-frequency signal used to carry the information signal in communication systems.

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Modulation in communication systems

The process of modifying a carrier signal using a baseband signal to carry information.

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Radio communication with modulation

The method of transmitting relatively low-frequency information signals using a carrier wave.

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Multiplexing in communication systems

The process of increasing the number of baseband signals that can be transmitted simultaneously.

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Multiplexing in communication systems

A technique that allows multiple signals to share the same medium or channel, increasing efficiency.

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