Energy Efficient Massive MIMO Point-to-Point Communications with Physical Layer Security: BPSK vs QPSK Decomposition

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Massive multiple-input multiple-output systems (mMIMO) are the most prevalent candidates for the next generation of wireless communication. Yet even with mMIMO systems the joint optimization of spectral and energy efficiencies can be only attained by combining high order signal constellations and efficient power amplification. In order to push this limitation, the transmitter can spread the information into several amplification branches, which are the result of the decomposition of multilevel constellation symbols into quasi constant envelope signals. Nevertheless, the high number of antennas involved in this type of communication leads to an increase of the channel matrix’s size and therefore the complexity of the equalization process can create drawbacks for the power consumption and latency. In this paper we will study the combination of a multi-layer transmitter with a low complexity receivers based on an iterative block decision feedback equalizer (IB-DFE). These receivers avoid the matrix inversion operation in the equalizer the feed-forward by replacing it with an equal gain combiner (EGC) or a maximum ratio combiner (MRC) module. Results show that can be used without penalties on performance provided that the number of antennas involved is high.

Original languageEnglish
Title of host publicationTechnological Innovation for Industry and Service Systems - 10th IFIP WG 5.5/SOCOLNET Advanced Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS 2019, Proceedings
EditorsLuis M. Camarinha-Matos, Ricardo Almeida, José Oliveira
Place of PublicationCham
PublisherSpringer
Pages283-295
Number of pages13
ISBN (Electronic)978-3-030-17771-3
ISBN (Print)978-3-030-17770-6
DOIs
Publication statusPublished - 1 Jan 2019
Event10th IFIP WG 5.5/SOCOLNET Advanced Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS 2019 - Costa de Caparica, Portugal
Duration: 8 May 201910 May 2019

Publication series

NameIFIP Advances in Information and Communication Technology
PublisherSpringer
Volume553
ISSN (Print)1868-4238

Conference

Conference10th IFIP WG 5.5/SOCOLNET Advanced Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS 2019
CountryPortugal
CityCosta de Caparica
Period8/05/1910/05/19

Keywords

  • Constellation shaping
  • Efficient power amplification
  • Low complexity detection
  • Massive MIMO systems

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