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</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</p> Signup and view all the answers

    Which basic modulation techniques are covered in the text?

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

    What is baseband transmission?

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

    What is the purpose of modulation?

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

    What is a modulating signal?

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

    Why are speech and music signals typically modulated?

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

    What is the purpose of multiplexing in communication systems?

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

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