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

Hisaho Matsuda, Katsunari Honjo, Tomoaki Ohtsuki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationVTC 2005-Fall
Subtitle of host publicationMid Way Through the Decade - Technology Past, Present and Future
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages19-23
Number of pages5
ISBN (Electronic)0780391527
DOIs
Publication statusPublished - 2005 Jan 1
Event62nd Vehicular Technology Conference, VTC 2005 - Dallas, United States
Duration: 2005 Sep 252005 Sep 28

Publication series

NameIEEE Vehicular Technology Conference
Volume1
ISSN (Print)1550-2252

Other

Other62nd Vehicular Technology Conference, VTC 2005
CountryUnited States
CityDallas
Period05/9/2505/9/28

ASJC Scopus subject areas

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

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    Matsuda, H., Honjo, K., & Ohtsuki, T. (2005). Signal detection scheme combining MMSE V-BLAST and variable K-best algorithms based on minimum branch metric. In VTC 2005-Fall: Mid Way Through the Decade - Technology Past, Present and Future (pp. 19-23). [1557463] (IEEE Vehicular Technology Conference; Vol. 1). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VETECF.2005.1557463