Mobile Communications Basics
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Questions and Answers

What is the term for signals transmitted from the base station to the mobile device in a cellular system?

  • Forward link (correct)
  • Uplink
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    • How can the capacity of a network be increased according to the text?

  • By increasing the power of the transmitter
  • By reducing the distance between co-channel cells
  • By employing more spectrally efficient modulation and multiple access techniques (correct)
  • By using a greater number of channels

    • What is the formula for determining the frequency re-use distance for a given cell cluster size?

  • $D = R imes rac{N}{3}$
  • $D = R imes N$
  • $D = R imes rac{N}{2}$
  • $D = R imes rac{N}{ ext{sqrt}(3)}$ (correct)

    • What condition must be met for a hexagonal cell structure to have no two adjacent cells using the same frequency?

    <p>$N=19$</p> Signup and view all the answers

    What is required to reduce co-channel interference in a cellular system?

    <p>$D$ must be physically separated by a minimum distance to provide sufficient isolation due to propagation</p> Signup and view all the answers

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