A new multiuser diversity scheme exploiting detection order for AM-OSIC system

Jaesang Ham, Kyeongyeon Kim, Seijoon Shim, Chungyong Lee, Jaehak Chung

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

We propose a new detection ordering scheme and multiuser diversity scheme, which minimizes an average error rate occurring in a MIMO system using only adaptive modulation technique applied to an ordered successive interference canceller (OSIC). We simplify an optimal scheme in the view point of error rate by using approximated error rate. Though the complexity is reduced by only maximizing a minimum equivalent SINR, scaled by modulation indices, the simplified scheme demonstrates the almost same performance as the optimal scheme. Owing to the selection diversity of detection ordering, the proposed scheme produces over 3dB SNR gain at the BER of 10-3 than the existing ordering schemes in the case of the 2×2 MIMO system with small amount of feedback information. We also propose the multiuser diversity scheme based on the proposed detection ordering scheme to improve average error rate of multiuser system. Here, multiuser diversity gain is obtained from the effect of user selection by the proposed scheme.

Original languageEnglish
Pages (from-to)1130-1133
Number of pages4
JournalIEEE Vehicular Technology Conference
Volume61
Issue number2
Publication statusPublished - 2005 Oct 17
Event2005 IEEE 61st Vehicular Technology Conference -VTC 2005 - Spring Stockholm: Paving the Path for a Wireless Future - Stockholm, Sweden
Duration: 2005 May 302005 Jun 1

Fingerprint

Multiuser Diversity
Interference
MIMO systems
Error Rate
Adaptive modulation
MIMO Systems
Modulation
Feedback
Adaptive Modulation
Diversity Gain
Simplify

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

Cite this

Ham, Jaesang ; Kim, Kyeongyeon ; Shim, Seijoon ; Lee, Chungyong ; Chung, Jaehak. / A new multiuser diversity scheme exploiting detection order for AM-OSIC system. In: IEEE Vehicular Technology Conference. 2005 ; Vol. 61, No. 2. pp. 1130-1133.
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A new multiuser diversity scheme exploiting detection order for AM-OSIC system. / Ham, Jaesang; Kim, Kyeongyeon; Shim, Seijoon; Lee, Chungyong; Chung, Jaehak.

In: IEEE Vehicular Technology Conference, Vol. 61, No. 2, 17.10.2005, p. 1130-1133.

Research output: Contribution to journalConference article

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AU - Kim, Kyeongyeon

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AB - We propose a new detection ordering scheme and multiuser diversity scheme, which minimizes an average error rate occurring in a MIMO system using only adaptive modulation technique applied to an ordered successive interference canceller (OSIC). We simplify an optimal scheme in the view point of error rate by using approximated error rate. Though the complexity is reduced by only maximizing a minimum equivalent SINR, scaled by modulation indices, the simplified scheme demonstrates the almost same performance as the optimal scheme. Owing to the selection diversity of detection ordering, the proposed scheme produces over 3dB SNR gain at the BER of 10-3 than the existing ordering schemes in the case of the 2×2 MIMO system with small amount of feedback information. We also propose the multiuser diversity scheme based on the proposed detection ordering scheme to improve average error rate of multiuser system. Here, multiuser diversity gain is obtained from the effect of user selection by the proposed scheme.

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