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									Course Name           GSM System Engineering
Course Number         LS 124 102
Course Duration       2 days
Course Description    This two-day seminar provides a solid grounding in principles of
                      basic GSM system design and RF engineering. Propagation, antenna
                      systems, and traffic engineering principles are thoroughly
                      introduced. Finally, GSM system design, growth, and performance
                      considerations are explored each student receiving example files on
                      disk.
Course Objective
Target Audience       Engineers, technicians, and technical managers with technical
                      backgrounds but limited wireless experience.

Prerequisites         Basic technical mathematics

Course Modules        Signal Principles

                           Modulation
                           Bandwidth
                           Interference
                            Performance

                      Radio Propagation Basics for GSM

                           Frequency and Wavelength
                           The Physics of Propagation: Free Space, Reflection,
                       Diffraction
                           Local Variability: Rayleigh fading and multipath cancellation
                           Area Propagation Models: Okumura, HATA, Cost 231
                           Point-to-Point Models: techniques and commercial software
                           Analyzing measured data to produce models
                           Reliability of Service: using statistics to design for reliability
                           Macro-cell Indoor Penetration Considerations and reliability
                           Micro-cellular systems and techniques

                      GSM Air Interface Overview
      GSM Air Interface Basics and Signal RF Characteristics
      How it all works: decoding GSM signals
      Capacity Implications of the Air Interface
      CM, MM, RR (Layer 3 messages)
      LAPDm (Layer 2)
      Radio channel (Layer 1)
      Logical and Physical Channels
      Handover

 Antennas for GSM

     Basic Antennas: Isotropic and Dipole radiators
     Concept of Antenna Gain and gain references
     Effective Radiated Power
     Antenna Patterns and Pattern Features
     How Antennas achieve Gain
     Reflector techniques, array techniques
     Families of Antennas used in Wireless: architecture,
  characteristics
     Collinear vertical antennas
     Horizontal arrays: yagis, log-periodic, etc.
     Implications of propagation driving antenna selection
     Multipath scattering in mobile clutter environment
     Beam width and tilt considerations for base station antennas

 Basic Principles of Traffic Engineering for GSM

      Terms and Basic Concepts
      Traffic Units (Erlangs, CCS, Minutes)
      Trunks, Circuits, Voice Paths
      Offered Traffic vs. Carried Traffic
      Blocking Probability, Grade of Service
      Basic Operational Concepts
      Using Traffic Tables
      Principle of Trunking Efficiency
 GSM Link Budgets and High-Level System Design

      Link Budget basics and application principles
      Traffic Considerations
      Determining Number of Cells Required

 Optional Background Material for GSM

      Calculating levels in decibels
      Receiver Basics
      Super heterodyne architecture, frequency conversion, images
      Sensitivity: noise basics
      Dynamic range and intermodulation considerations
      Transmitter Basics
      Linear vs. non-linear amplifier

								
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