A power efficient technique for double layer massive MIMO schemes

Afonso Ferreira, Guilherme Gaspar, Paulo Montezuma, Rui Dinis, Nalin Jayakody

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Next generation of mobile communication systems must support astounding data traffic increases, higher data rates and lower latency, among other requirements. All these requirements should be met while assuring energy efficiency for mobile devices and base stations. Most likely, the future 5G systems will include massive MIMO (Multiple Input Multiple Output) schemes with dozen or hundreds of antennas enabling beamforming while operating in the millimeter wave spectrum. As soon as the millimetric wave propagation difficulties are overcome, the full potential of massive MIMO structures can be tapped. This paper presents a transmission system with bi-dimensional antenna arrays, based on a double layer structure combining beamforming with a multi-branch power amplification that achieves simultaneously power efficiency in amplification of multilevel constellations without penalties on system performance when compared with common schemes using only beamforming.

Original languageEnglish
Title of host publication2017 IEEE 86th Vehicular Technology Conference, VTC Fall 2017 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages6
ISBN (Electronic)978-1-5090-5935-5
Publication statusPublished - 2017
Event86th IEEE Vehicular Technology Conference, VTC Fall 2017 - Toronto, Canada
Duration: 24 Sep 201727 Sep 2017


Conference86th IEEE Vehicular Technology Conference, VTC Fall 2017


  • Beamforming
  • Massive MIMO
  • Millimetric wave
  • Power efficiency


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