Channel Correlation Diversity in MU-MIMO Systems - Analysis and Measurements

Forskningsoutput: Kapitel i bok/rapport/Conference proceedingKonferenspaper i proceeding

Abstract

In multiuser multiple–input multiple–output (MU–MIMO) systems, channel correlation is detrimental to system performance. We demonstrate that widely used, yet overly simplified, correlation models that generate identical correlation profiles for each terminal tend to severely underestimate the system performance. In sharp contrast, more physically motivated models that capture variations in the power angular spectra across multiple terminals, generate diverse correlation patterns. This has a significant impact on the system performance. Assuming correlated Rayleigh fading and downlink zero–forcing precoding, tight closed form approximations for the average signal–to–noise–ratio, and ergodic sum spectral efficiency are derived. Our expressions provide clear insights into the impact of diverse correlation patterns on the above performance metrics. Unlike previous works, the correlation models are parameterized with measured data from a recent 2.53 GHz urban macrocellular campaign in Cologne, Germany. Overall, results from this paper can be treated as a timely re–calibration of performance expectations from practical MU–MIMO systems.

Detaljer

Författare
  • Harsh Tataria
  • Seun Sangodoyin
  • Andreas Molisch
  • Peter J Smith
  • Michail Matthaiou
  • Jianzhong (Charlie) Zhang
  • Reiner S Thoma
Enheter & grupper
Externa organisationer
  • Victoria University of Wellington
  • University of Cape Town
  • Queen's University Belfast
  • Samsung Electronics, Co., Ltd.
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Kommunikationssystem

Nyckelord

Originalspråkengelska
Titel på värdpublikationIEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
Antal sidor7
StatusSubmitted - 2019 apr 5
PublikationskategoriForskning
Peer review utfördJa
EvenemangIEEE International Symposium on Personal, Indoor and Mobile Radio Communications - Istanbul Congress Center , Istanbul, Turkiet
Varaktighet: 2019 sep 82019 sep 11
http://pimrc2019.ieee-pimrc.org/

Konferens

KonferensIEEE International Symposium on Personal, Indoor and Mobile Radio Communications
Förkortad titelIEEE PIMRC
LandTurkiet
OrtIstanbul
Period2019/09/082019/09/11
Internetadress