Mobile Communication Frequency Reuse Quiz
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Questions and Answers

What is the maximum bit rate offered by 3G systems?

  • 1Mbps
  • 4Mbps
  • 2Mbps (correct)
  • 3Mbps
  • Which organization is responsible for managing the UMTS standard?

  • IEEE
  • ETSI
  • 3GPP (correct)
  • ITU
  • What was the first country to deploy a commercial UMTS network?

  • Germany
  • France
  • UK
  • Japan (correct)
  • What is the main advantage of WCDMA over 2G systems?

    <p>High data capability</p> Signup and view all the answers

    Which duplexing modes are supported by 3G systems for communication?

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

    What is the main benefit of Time Division Duplexing (TDD) over Frequency Division Duplexing (FDD)?

    <p>More efficient spectrum utilization</p> Signup and view all the answers

    Which technology was the first to introduce digital voice and SMS capabilities in mobile communication?

    <p>2G</p> Signup and view all the answers

    What is the bandwidth for 2G technology as per the provided table?

    <p>14.4 kbps</p> Signup and view all the answers

    In which year did the implementation of 2.5G technology take place according to the text?

    <p>1999</p> Signup and view all the answers

    What is one of the key features of UMTS networks as mentioned in the text?

    <p>Efficient use of radio spectrum</p> Signup and view all the answers

    What technique was used by the global system for mobile communication (GSM) standard in the 2nd generation (2G) to multiplex up to 8 calls per channel?

    <p>Time Division Multiple Access (TDMA)</p> Signup and view all the answers

    What was one of the limitations of 2G systems mentioned in the text?

    <p>Limited data capabilities</p> Signup and view all the answers

    What is the primary goal of the 3rd generation (3G) mobile telephony standards defined by the ITU?

    <p>Increased bandwidth and diverse applications support</p> Signup and view all the answers

    Which mobile telephony standard used CDMA to multiplex up to 64 calls per channel in the 800MHz band during the 2nd generation (2G)?

    <p>IS-95</p> Signup and view all the answers

    What was one of the main reasons for the development of 3G mobile telephony standards?

    <p>Enhanced facilities and improved data rates</p> Signup and view all the answers

    What is the advantage of using a single radio frequency for both directions in UMTS?

    <p>No need for a duplexer</p> Signup and view all the answers

    Which components are needed when using a single radio frequency in UMTS?

    <p>Fast switching synthesizer, RF filter path, and fast antenna switch</p> Signup and view all the answers

    In UMTS systems, what is the purpose of a fast antenna switch?

    <p>To switch between transmit and receive modes rapidly</p> Signup and view all the answers

    Which technology uses Frequency Division Duplexing (FDD) in its standard GSM 900 Band?

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

    What is the purpose of network domains in GSM systems?

    <p>To route incoming calls to the correct exchange</p> Signup and view all the answers

    What allows a much higher subscriber density per MHz of spectrum in cellular systems?

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

    What type of handsets can be used with a radio frequency lower than earlier systems in cellular networks?

    <p>Battery-powered handsets</p> Signup and view all the answers

    What is required for continuous coverage in cellular systems as mobile units cross cell boundaries?

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

    How are conversations maintained as mobile users travel from cell to cell in cellular networks?

    <p>Handover between base stations</p> Signup and view all the answers

    What allows the same channels to be reused in different cells in cellular networks some distance apart?

    <p>&quot;Frequency reuse&quot;</p> Signup and view all the answers

    What is the main purpose of HSDPA and wide band AMR services in UMTS?

    <p>To enhance the speed of the data rate</p> Signup and view all the answers

    In UMTS, what speed can be achieved with the integration of voice data and downlink shared data on the same carrier?

    <p>Up to 14 Mbps</p> Signup and view all the answers

    Which organization defines standards for different UMTS releases?

    <p>3GPP</p> Signup and view all the answers

    What is the main difference between UMTS and CDMA 2000 in the context of IMT-2000 systems?

    <p>UMTS is based on WCDMA technology while CDMA 2000 is based on CDMA technology</p> Signup and view all the answers

    What is the purpose of UMTS release architectures according to the text?

    <p>To provide a smooth transition from second-generation systems by gradually introducing new software and network elements</p> Signup and view all the answers

    What is one of the key advantages that HSPA offers over the original UMTS system?

    <p>Higher data transfer rates</p> Signup and view all the answers

    Which modulation technique is used in the downlink of HSPA to enable higher data transmission rates?

    <p>64-QAM</p> Signup and view all the answers

    What is the downlink speed (in Mbps) offered by UMTS Release 7?

    <p>28</p> Signup and view all the answers

    What upgrade is introduced in 3GPP Release 10 to enhance uplink performance?

    <p>MIMO in UL</p> Signup and view all the answers

    Which technology increases both data and voice capacity in UMTS networks?

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

    In which domain was UMTS Release 5 primarily oriented according to the text?

    <p>Switched circuit operation</p> Signup and view all the answers

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