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Mobile Technologies and GSM Networks
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Mobile Technologies and GSM Networks

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Questions and Answers

What is the frequency band used by D-AMPS?

  • 700 MHz and 1100 MHz
  • 800 MHz and 900 MHz (correct)
  • 900 MHz and 1900 MHz
  • 1000 MHz and 2000 MHz
  • What was the bandwidth of the Early AMPS in the 800 MHz band?

  • 30 kHz (correct)
  • 20 kHz
  • 40 kHz
  • 50 kHz
  • What is the original name of GSM?

  • Global System for Mobile
  • General System of Mobile
  • Group of Special Mobile (correct)
  • General System for Mobile
  • What was the signaling rate of the Early AMPS?

    <p>10 kbps</p> Signup and view all the answers

    In which year was the first GSM deployed?

    <p>1991</p> Signup and view all the answers

    What is the modulation technique used by GSM?

    <p>Gaussian Minimum Shift Key (GMSK)</p> Signup and view all the answers

    What was the name given to the system since 1976?

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

    What was the frequency band used by TACS?

    <p>900 MHz</p> Signup and view all the answers

    What is the contribution of GSM to Nigeria's GDP in Q4 of 2017?

    <p>8.86%</p> Signup and view all the answers

    When did GSM penetration start in Nigeria?

    <p>August 2001</p> Signup and view all the answers

    What was a major problem associated with the 1G system?

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

    What is the multiple access technique used by GSM?

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

    What was the approximate cost of a cell phone using the 1G system?

    <p>$1000</p> Signup and view all the answers

    What was the air interface protocol used by IS-54 and IS-136?

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

    What is the bandwidth of each carrier in GSM?

    <p>200 kHz</p> Signup and view all the answers

    What was the result of digitally compressing the voice data in 2G systems?

    <p>Increased call capacity</p> Signup and view all the answers

    What is the topic of Week 4 in the course?

    <p>Antennas and Radio Wave Propagation</p> Signup and view all the answers

    What is the focus of Week 9 in the course?

    <p>Teletraffic Engineering and Capacity planning in GSM networks</p> Signup and view all the answers

    In which week is the topic of GSM link budget and coverage planning covered?

    <p>Week 5</p> Signup and view all the answers

    What is the primary objective of this course?

    <p>To emphasize the applications of digital communication systems in mobile cellular networks</p> Signup and view all the answers

    In which week is the topic of Backhauling systems, Transmission and Network Planning covered?

    <p>Week 13</p> Signup and view all the answers

    What is the duration of the topic of Antennas and Radio Wave Propagation in the course?

    <p>1 week</p> Signup and view all the answers

    In which week is the Mid Term Break and Test 1 scheduled?

    <p>Week 8</p> Signup and view all the answers

    What is the topic of Week 11 in the course?

    <p>Mobility management (MM) in GSM Networks</p> Signup and view all the answers

    What is the main driver towards the next generation systems?

    <p>Cloud computing, Wireless Network Function Virtualization and software defined networking</p> Signup and view all the answers

    What is the data rate of GSM in 2G technology?

    <p>9.6/14.4 kbps</p> Signup and view all the answers

    What is the bandwidth of CDMA 2000 1X in 2.5G technology?

    <p>1.25 MHz</p> Signup and view all the answers

    What is the data rate of WCDMA in 3G technology?

    <p>144 kbps</p> Signup and view all the answers

    What is the bandwidth of LTE in 4G technology?

    <p>1.25/1.6/2.5/5/10/15/ and 20 MHz</p> Signup and view all the answers

    What is the switching type of IS-95 in 2G technology?

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

    What is the data rate of HSPA in 3.5G and 3.75G technologies?

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

    What is the mobile station (MS) in mobile communication?

    <p>A radio transceiver that is attached to the network</p> Signup and view all the answers

    What is the title of Onyedibe's 2005 publication?

    <p>Nigeria’s Telecommunication Industry in the New Millennium: Problems, Challenges and Progress</p> Signup and view all the answers

    What is the title of the 2016 publication by ITU?

    <p>ICT Facts and Figures</p> Signup and view all the answers

    What is the ISBN of Mishra's 2007 publication?

    <p>978-0-470-01471-4</p> Signup and view all the answers

    What is the title of the 2015 publication by Vinicius C.M.Borges et al?

    <p>Aspirations, Challenges, and Open Issues for Software-Based 5G Networks</p> Signup and view all the answers

    What is the title of the 2015 publication by 5GPPP?

    <p>The Next Generation of Communication Networks and Services</p> Signup and view all the answers

    Who is the author of the publication 'Wireless Communications Principle and Practice'?

    <p>Rappaport T.S.</p> Signup and view all the answers

    What is the title of the publication by Nisha Panwar et al?

    <p>A Survey on 5G: The Next Generation of Mobile Communication</p> Signup and view all the answers

    What is the title of the publication by Schiller.J?

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

    Study Notes

    Course Overview

    • The course covers the principles and techniques of digital communication systems, with an emphasis on mobile cellular networks.

    1G Systems

    • Early AMPS (Advanced Mobile Phone Systems) used FDMA in the 800 MHz band at a bandwidth of 30 kHz.
    • AMPS concentrated on speech services and were based on analog transmission.
    • The system had capacity and security-related problems.

    Problems Associated with 1G Systems

    • Compatibility issues: All deployed systems were incompatible.
    • Standard: Each network had its own standard.
    • Roaming: Roaming was impossible, and most countries had only one operator.
    • Size and Charging: 1980s technology couldn't make cell phones small and affordable.
    • Cost: The systems were very expensive, around $1000.

    2G Systems

    • 2G systems use digital transmission technology, introduced in the 1990s.
    • Examples of 2G systems include GSM, IS-54, IS-95, IS-136, PDC, and PHS.
    • GSM (Global Systems for Mobile Communications) was developed in Europe in 1983.
    • GSM systems operate at various frequency bands, including 900 MHz/1800 MHz.

    GSM in Nigeria

    • GSM was introduced in Nigeria in August 2001.
    • GSM systems operate in various frequencies and use the time division multiple access (TDMA) technique to multiplex up to 8 calls per channel.
    • GSM contributes around 8.86% to Nigeria's GDP.

    Importance of GSM

    • GSM is important to study because it offers various services, including prepaid/postpaid calling, voice, mail, SMS, and call waiting.

    Migration Paths from 1G to 3G

    • The migration from 1G to 3G involved the development of intermediate technologies, such as 2.5G and 3.5G.

    Mobile Standards and Properties

    • Various mobile standards, including GSM, IS-136, IS-95, HSCSD, GPRS, EDGE, CDMA 2000, WCDMA, HSPA, and LTE, have different data rates, bandwidths, and switching techniques.

    Terms Associated with Mobile Communication

    • Mobile station (MS): A radio transceiver attached to a network, used to make and receive calls.
    • ITU (International Telecommunication Union): A specialized agency of the United Nations that coordinates global telecommunication networks and services.
    • NCC (Nigerian Communications Commission): The regulatory body for the Nigerian telecommunications industry.

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    Test your knowledge of mobile technologies and GSM networks, covering topics such as spectrum management, GSM network infrastructure, and radio wave propagation. Review key concepts from the course and assess your understanding of GSM networks.

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