Energy Efficiency vs Spectral Efficiency Tradeoff in MIMO Systems with Hardware Non-Linearities

Publikation: Beitrag in Buch/Konferenzbericht/Sammelband/GutachtenBeitrag in KonferenzbandBeigetragenBegutachtung

Abstract

Massive multiple-input multiple-output (MIMO) technology is one of the pivotal enablers for future wireless communication systems that offer high spectral efficiency (SE) and reliability due to its increased array and diversity gains. However, energy efficiency (EE) and sustainability of the system is one of the crucial parameters for next-generation wireless networks, necessitating careful consideration of the SE vs. EE tradeoff. Accurate evaluation of a system's EE requires a comprehensive end-to-end (E2E) model that accounts for practical hardware impairments, such as finite-resolution analog-to-digital converters (ADCs) / digital-to-analog converters (DACs) and non-linear power amplifiers (PAs), which degrade system performance. In this work, we develop an E2E model for MIMOorthogonal frequency division multiplexing (OFDM) system with hybrid beamforming considering both the partially connected (PC) and fully connected (FC) architectures. The behavior of finite-resolution DACs and ADCs is characterized as additive quantization noise model (AQNM), while the behavior of PAs is characterized through the Bussgang decomposition. Our analysis offers valuable insights into the influence of DAC/ADC resolution and PA input back-off (IBO) on the EE of the system, highlighting key trade-offs and performance considerations for system design.

Details

OriginalspracheEnglisch
Titel2025 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit)
Herausgeber (Verlag)IEEE Canada
Seiten649-654
Seitenumfang6
ISBN (elektronisch)979-8-3503-9180-0
ISBN (Print)979-8-3503-9181-7
PublikationsstatusVeröffentlicht - 6 Juni 2025
Peer-Review-StatusJa

Publikationsreihe

ReiheEuropean Conference on Networks and Communications (EuCNC)
ISSN2475-6490

Konferenz

Titel2025 Joint European Conference on Networks and Communications & 6G Summit
UntertitelTowards the 6G World
KurztitelEuCNC & 6G Summit 2025
Dauer3 - 6 Juni 2025
Webseite
OrtPoznań Congress Center
StadtPoznan
LandPolen

Externe IDs

Scopus 105010579197
ORCID /0000-0003-3045-6271/work/193705600
ORCID /0000-0002-1315-7635/work/193706694
ORCID /0000-0001-7075-8990/work/193706938
ORCID /0000-0001-8165-5735/work/193707091
Mendeley 43dcd09a-f42d-3d71-a49a-46bc111f583d

Schlagworte

Ziele für nachhaltige Entwicklung

Schlagwörter

  • energy efficiency, hardware non-linearity, massive MIMO, multipleinput multiple-output, spectral efficiency