40410 «LTE Air Interface»

Course Code



This course covers the major aspects of radio technology involved in E-UTRAN (Evolved UTRAN, also referred to as LTE – Long Term Evolution).

The course will start with a review of the LTE system architecture and will describe the radio channel environment and the related RF propagation issues.

It provides detailed descriptions and explanations of the radio interface channel structure and explains the concepts of channel coding, modulation, OFDM (Orthogonal Frequency Division Multiplexing), SC-FDMA (Single-Carrier Frequency Division Multiple Access), MIMO (Multiple Input Multiple Output), Resource Blocks, Scheduling, control signaling, System Information, FDD, TDD.

In the course we also discuss the LTE idle mode functionality and physical layer procedures, mobility, paging, cell search channel quality and random access techniques.


Learning objectives

On completion of this course the participants will be able to:

  • Describe the wireless network evolution and more specific explain the 4G architecture and used terms (LTE, SAE, E-UTRAN, EPC)
  • Explain the LTE Radio Interface principles
  • Describe the principles for OFDM
  • Mention the propagation characteristics
  • Mention the radio channel structure
  • Describe the channel models, frequency selective channels, time dependent radio channels, multipath radio conditions
  • Explain the modulation principles (QPSK, 16QAM, 64QAM)
  • Describe the MIMO system
  • Describe the radio interface techniques
  • Explain the difference between the FDD and TDD mode
  • Describe the flexible spectrum usage
  • Explain the technical characteristics for UE transmitter /Receiver
  • Overview of idle mode functionality
  • Describe the physical layer procedures
  • Explain the concepts of channel coding and FEC (Forward Error Correction)
  • Detail the Radio Interface structure and signaling
  • Describe the physical signals in UL and DL
  • Mention intercell synchronization
  • Detail the radio interface protocols
  • Detail the downlink transmission technique
  • Have a good understanding of the OFDM principle, signal generation and processing
  • Detail the reference symbols in DL
  • Detail the DL control signaling and formats
  • Detail the paging procedures
  • Explain HARQ
  • Explain the cell search procedure
  • Detail the uplink transmission technique
  • Have a good understanding of the SC-FDMA principle, signal generation and processing
  • Detail the UL control signaling and formats
  • Detail the random access procedure
  • Describe the Power Control in UL
  • Describe the concepts of layers, channel rank, spatial multiplexing, open and closed loop spatial multiplexing, TX diversity, beamforming, SU-MIMO and MU-MIMO
  • Describe the Radio Resource and Mobility Management
  • Describe UL and DL Scheduling principles and signaling
  • Explain the scheduler interactions with other functions
  • Explain the concepts of dynamic and semi-persistent scheduling
  • Describe intra-LTE mobility in ECM-CONNECTED and ECM-IDLE mode
  • Explain the concept of event triggered periodical reporting
  • Describe the mobility measurements


Target audience

The target audience for this course is:

Network Engineer, Service Engineer, Service Design Engineer, Network Design Engineer



The participants should have a general knowledge in cellular systems and radio technology and equivalent knowledge to “LTE/SAE basics” course


Duration and class size

The recommended length of the course is 4 days.

The maximum number of participants is 16


Learning situation

This course is based on theoretical instructor-led lessons given in a classroom environment.


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