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Uplink Performance Analysis of Multicell MU-MIMO with Zero-Forcing Receivers and Perfect CSI
Responsible organisation
2011 (English)Conference paper, Published paper (Refereed) Published
Abstract [en]

We consider the uplink of a multicell multiuser MIMO system. The data detection is done by using the zero-forcing (ZF) technique, assuming the base station has perfect channel state information. We derive an exact closed-form expression for the uplink rate per user. We further study the asymptotic performance of the system. We show that, at high signal-to-noise ratio, the system is interference-limited and hence, we cannot improve the system performance by increasing the transmit power at each user. Instead, by increasing the number of base station antennas, the effects of interference and noise can be reduced, thereby improving the system performance. In particular, we show that, with very large antenna arrays at the base station, the transmit power of each user can be made inversely proportional to the number of base station antennas while maintaining a desired quality-of-service. Numerical results verify our analysis.

Place, publisher, year, edition, pages
Stockholm: IEEE , 2011.
Keyword [en]
MIMO, uplink, multi-user, zero-forcing
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:bth-7440Local ID: oai:bth.se:forskinfo347FC8EAB5805E1DC125793E0036DD45OAI: oai:DiVA.org:bth-7440DiVA: diva2:835056
Conference
IEEE Swedish Communication Technologies Workshop
Available from: 2012-09-18 Created: 2011-11-04 Last updated: 2015-06-30Bibliographically approved

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
  • html
  • text
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