Training - MIMO Technology (LTE and Beyond)


The deployment of multiple antennas both at the transmitter and the receiver opens up great opportunities to enhance the reliability and / or increasing the data rates in mobile communication systems. Already, deployment is widespread. Ever since it could be proven in the mid-nineties that the capacity of a rich-scattering mobile communication channel increases linearly with the minimum number of antennas used at either end of the channel, multiple-antenna schemes have attracted considerable attention first in academia and more recently also in the industry. Furthermore, as mobile communication systems are - at least when fully loaded – interference-limited, it does not suffice to focus on the physical layer. In addition, coordination or even cooperation among neighboring cells is required for reducing inter-cell interference and enhancing system capacity even further. While the topic appeared to mature and saturate research regained momentum with the advent of massive MIMO, i.e. systems using vast numbers of coordinated antenna elements, which opens plenty of possibilities for further dramatic increases in cell-spectral efficiency by drastically reducing interference in the system.


This course will provide participants with a comprehensive overview of communication systems with multiple antennas on the transmitter and / or receiver side. After a brief introduction concerning the necessary fundamentals of linear algebra, the course will start by considering the multiple-antenna channel and characterizing it to the extent of interest for MIMO transmission schemes. Subsequently, fundamental limits on data rates that may be transmitted over MIMO systems will be discussed. Both optimal and suboptimal transmission schemes will be considered in detail. Furthermore, diversity techniques will be discussed and put into perspective. The first part of the course will be completed with a part on techniques for multi-user MIMO. The second day of the course will introduce MIMO technologies deployed in LTE along with necessary higher layer-signaling and procedures. Finally, the most recent developments such as massive MIMO and multi-site cooperation techniques as envisaged for LTE-Advanced with the aim of reducing inter-cell interference will be presented.The content of the course can of course to some extent be tailored to your specific needs.


Instead of providing yet another purely theoretical training course, Nomor Research will provides participants with a genuine hands-on training experience that makes use of an interactive system demonstration tool. After using the tool, your employees will really understand complex aspects of the system and will immediately see the impact of a change in specific parameters on the performance. By looking at system simulations, participants will understand the difference between theoretical and real deployments, real scenarios, real performance!

Day 1 – Introduction to Multiple-Antenna Systems (Physical Layer)

Introduction and Theory

  • Required Basics of Linear Algebra
  • MIMO channels – Description and Modelling
  • Ultimate Limits – Channel Capacity
    • Point-to-Point MIMO
    • Multipoint-to-Point MIMO (Multiple Access)
    • Point-to-Multipoint MIMO (Broadcast)

Practical MIMO Systems

  • Space-Time Coding
  • Spatial Multiplexing
  • Multi-User MIMO

Day 2 - LTE MIMO Details and LTE Advanced Technologies

Details of the LTE MIMO Schemes

  • Standardized MIMO Schemes
    • Transmit Diversity
    • Closed-Loop Rank-1 Transmission
    • Single- and Multi-User Spatial Multiplexing in Downlink
    • Uplink Limitations and MIMO Schemes
  • MIMO Reference Symbols (common and dedicated RS)
  • MIMO Link Adaptation
    • Rate and Link Adaptation of Streams
    • Pre-coding Matrix Indicator and Rank Indicator
    • Hybrid ARQ of MIMO streams
  • PDCCH/PUCCH Control Signalling to support MIMO
  • Adaptive MIMO and related L3 Signalling

MIMO Enhancements in LTE Advanced

  • LTE MIMO schemes in Release 10
    • Downlink MIMO Enhancements
    • Design of Dedicated Reference Symbols 
    • New MIMO Uplink Schemes
  • Massive MIMO 
  • Introduction to LTE Intercell interference
  • Cooperative Multi-Point Transmission
    • Coordinated Multi-Site Beamforming
    • Cooperative Multi-Site Beamforming
    • Multi-Site Spatial Multiplexing