A spatial interference minimization strategy for the correlated LTE downlink channel

R Nordin, SMD Armour, JP McGeehan

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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Abstract

In a downlink transmission, users can benefit from the high capacity gain achieved by transmitting independent data streams from multiple antennas to multiple users sharing the same physical time-frequency resources. This technique is known as multiuser MIMO (MU-MIMO). However, performance of MU-MIMO is sensitive towards propagation imperfections, such as time dispersion and inter-stream interference due to antenna correlation. In this paper we investigate the performance of MU-MIMO operation in 3GPP-LTE downlink transmission by employing a novel multiuser allocation, known as dynamic subcarrier allocation (DSA) that aims to minimize the effect of antenna correlation from the knowledge of the Effective Signal-to-Interference-plus-Noise Ratio (ESINR) metric. The suboptimal scheme is especially attractive when the number of users is large in highly correlated channel conditions where it is able to minimize the effect of spatial correlation and thereby achieve improved BER performance.
Translated title of the contributionA spatial interference minimization strategy for the correlated LTE downlink channel
Original languageEnglish
Title of host publicationIEEE 21st International Symposium on Personal, Indoor and Mobile Radio Communications 2010 (PIMRC 2010), Istanbul, Turkey
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages757 - 761
Number of pages5
ISBN (Print)9781424480159
DOIs
Publication statusPublished - Sep 2010
Event21st International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) - Istanbul, Turkey
Duration: 1 Sep 2010 → …

Conference

Conference21st International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
CountryTurkey
CityIstanbul
Period1/09/10 → …

Bibliographical note

Rose publication type: Conference contribution

Additional information: With accompanying conference presentation

Sponsorship: This work was financially supported in part by the National University of Malaysia and Malaysia’s Ministry of Higher Education, whose financial support is greatly acknowledged.

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Keywords

  • correlated channel
  • ESINR
  • LTE
  • MIMO
  • MU-MIMO
  • multiuser
  • self-interference
  • spatial correlation
  • spatial multiplexing
  • subcarrier allocation

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