Signal detection scheme combining MMSE V-BLAST and variable K-best algorithms based on minimum branch metric

Hisaho Matsuda, Katsunari Honjo, Tomoaki Ohtsuki

研究成果: Conference contribution

10 被引用数 (Scopus)

抄録

In multiple-input multiple-output (MIMO) systems Maximum Likelihood Detection (MLD) is known as an optimal method for signal detection in terms of bit error rate (BER). However, the main drawback of MLD is its high complexity. One of the possible methods to reduce the complexity of MLD is a signal detection scheme combining Zero-Forcing (ZF) and K-best algorithms based on the metric. The other method is the signal detection scheme with controlling the number of surviving candidates by setting the threshold to the metric. In this paper, we propose the signal detection scheme combining Minimum Mean Square Error (MMSE) Vertical Bell Laboratories Layered Space- Time (V-BLAST) and variable K-best algorithms in MIMO systems. In the proposed detection scheme, we estimate the initial symbol by MMSE V-BLAST algorithm and perform the variable K-best algorithm controlling the number of surviving candidates by setting the threshold to the metric. We show by simulation results that the proposed signal detection scheme can achieve almost identical BER to that of V-BLAST + K-best algorithm with less complexity and can achieve better BER than ZF + variable K-best algorithm with less complexity.

本文言語English
ホスト出版物のタイトルVTC 2005-Fall
ホスト出版物のサブタイトルMid Way Through the Decade - Technology Past, Present and Future
出版社Institute of Electrical and Electronics Engineers Inc.
ページ19-23
ページ数5
ISBN(電子版)0780391527
DOI
出版ステータスPublished - 2005 1 1
イベント62nd Vehicular Technology Conference, VTC 2005 - Dallas, United States
継続期間: 2005 9 252005 9 28

出版物シリーズ

名前IEEE Vehicular Technology Conference
1
ISSN(印刷版)1550-2252

Other

Other62nd Vehicular Technology Conference, VTC 2005
国/地域United States
CityDallas
Period05/9/2505/9/28

ASJC Scopus subject areas

  • コンピュータ サイエンスの応用
  • 電子工学および電気工学
  • 応用数学

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