Multi-Switch for Antenna Selection in Massive MIMO

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

Abstract

Massive MIMO has been shown to greatly improve spectral and transmit-energy efficiency. When implementing a massive MIMO system, one challenge is high hardware complexity. A solution is to reduce the number of radio frequency (RF) transceiver chains by performing antenna selection. However, a full RF switch that connects the antennas and RF chains can be highly complex and incurs significant loss in output signal quality, especially when the number of antennas and RF chains are large. We therefore propose a simpler solution - binary switching architecture, which is sub-optimal but provides better signal quality, as compared to the full switching network. To evaluate the proposed technique, we compare the sum-rate capacity when using several different configurations of binary switching with the performance of the full switching. Full MIMO performance obtained without antenna selection is also presented as a reference. The investigations in this paper are all
based on measured channel data at 2.6 GHz, using a uniform linear array and a cylindrical array, both having 128 antenna elements. It is found that the proposed binary switching gives very competitive performance that are close to the full switching, for the measured channels. The results indicate a potential to simplify massive MIMO hardware by reducing the number of RF chains, and performing antenna selection with simple binary switching architecture.

Detaljer

Författare
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Kommunikationssystem
  • Signalbehandling

Nyckelord

Originalspråkengelska
Titel på värdpublikationProc. 2015 IEEE Global Communications Conference, ISBN: 978-147995952-5
FörlagIEEE - Institute of Electrical and Electronics Engineers Inc.
Antal sidor6
StatusPublished - 2015 dec 6
PublikationskategoriForskning
Peer review utfördJa
EvenemangIEEE Global Communication Conference (GLOBECOM), 2015 - San Diego, San Diego, California, USA
Varaktighet: 2015 dec 62015 dec 10

Konferens

KonferensIEEE Global Communication Conference (GLOBECOM), 2015
LandUSA
OrtSan Diego, California
Period2015/12/062015/12/10

Nedladdningar

Ingen tillgänglig data