Signal Processing - January 2017 - 40
Signal ProceSSing education
via HandS-on and deSign ProjectS
Erik G. Larsson, Danyo Danev,
Mikael Olofsson, and Simon Sörman
Teaching the Principles of Massive MIMO
Exploring reciprocity-based multiuser MIMO beamforming
using acoustic waves
M
main image ©istockphoto.com/skynesher; screen image ©istockphoto.com/alengo
assive multiple-input, multiple-output (MIMO) is currently the most compelling wireless physical layer technology and a key component of fifth-generation (5G)
systems. The understanding of its core principles has
emerged during the last five years, and material is becoming
available that is rigorously refined to focus on timeless fundamentals [1], facilitating the instruction of the topic to both
master- and doctoral-level students [2]. Meaningful laboratory
work that exposes the operational principles of massive MIMO
is more difficult to accomplish. At Linköping University, Sweden, this was achieved through a project course, based on the
conceive-design-implement-operate (CDIO) concept [3], and
through the creation of a specially designed experimental
setup using acoustic signals. The course was developed with
the following three objectives in mind:
■ Exposure of students to emerging concepts and to the technology of the future, not of the past. This target was inherently met via the focus on massive MIMO.
■ Promotion of a systems view of thinking, requiring the
synthesis of knowledge acquired through the classical curriculum. This goal was achieved through the development
of a unique acoustic, reciprocity-based massive MIMO
laboratory setup (Figure 1), with students taking the lead
both in its development and evaluation and, subsequently,
its refinement.
■ Fosterage of genuine teamwork, preparing students for a
dynamic work environment. This was efficiently facilitated
through the adoption of the CDIO project concept, which
integrates technical work with the instruction of project
management and entrepreneurial skills.
Massive MiMo: The scalable 5G wireless
access technology
Digital Object Identifier 10.1109/MSP.2016.2618914
Date of publication: 11 January 2017
40
Massive MIMO exploits the use of large antenna arrays at
wireless base stations to simultaneously serve a large number
of autonomous terminals through spatial multiplexing. The
multiplexing takes the form of beamforming, also known as
multiuser precoding, effectively creating transmitted signals
IEEE SIgnal ProcESSIng MagazInE
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January 2017
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1053-5888/17©2017IEEE
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Table of Contents for the Digital Edition of Signal Processing - January 2017
Signal Processing - January 2017 - Cover1
Signal Processing - January 2017 - Cover2
Signal Processing - January 2017 - 1
Signal Processing - January 2017 - 2
Signal Processing - January 2017 - 3
Signal Processing - January 2017 - 4
Signal Processing - January 2017 - 5
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Signal Processing - January 2017 - 101
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Signal Processing - January 2017 - 103
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Signal Processing - January 2017 - Cover3
Signal Processing - January 2017 - Cover4
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