EM-based poor slot update method for MIMO IDD receiver in fast time-varying channels

Minsung Kim, Jehoon Cho, Tae Won Oh

Research output: Contribution to journalArticle

Abstract

In this study, the authors propose an expectation-maximisation (EM)-based poor slot update method for multiple-input multiple-output (MIMO) iterative detection and decoding (IDD) receivers to increase their channel tracking capability in fast timevarying channels. The poor slots that trigger error propagation in a frame are selected, the channel state information is updated, and the updated recursive least squares channel tracking algorithm is executed. The accurate channel tracking capability of this new channel updating technique contributes to a 3 dB improvement in the bit error rate performance of an IDD receiver in a fast mobile environment ( > 180 km/h). The authors also demonstrate that an ~ 20 - 25% complexity reduction can be achieved under various conditions.

Original languageEnglish
Pages (from-to)932-940
Number of pages9
JournalIET Communications
Volume12
Issue number8
DOIs
Publication statusPublished - 2018 May 15

Fingerprint

Decoding
Channel state information
Bit error rate

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering

Cite this

EM-based poor slot update method for MIMO IDD receiver in fast time-varying channels. / Kim, Minsung; Cho, Jehoon; Oh, Tae Won.

In: IET Communications, Vol. 12, No. 8, 15.05.2018, p. 932-940.

Research output: Contribution to journalArticle

@article{00b09cc04cfe4ebfb9b85ce898f57b2a,
title = "EM-based poor slot update method for MIMO IDD receiver in fast time-varying channels",
abstract = "In this study, the authors propose an expectation-maximisation (EM)-based poor slot update method for multiple-input multiple-output (MIMO) iterative detection and decoding (IDD) receivers to increase their channel tracking capability in fast timevarying channels. The poor slots that trigger error propagation in a frame are selected, the channel state information is updated, and the updated recursive least squares channel tracking algorithm is executed. The accurate channel tracking capability of this new channel updating technique contributes to a 3 dB improvement in the bit error rate performance of an IDD receiver in a fast mobile environment ( > 180 km/h). The authors also demonstrate that an ~ 20 - 25{\%} complexity reduction can be achieved under various conditions.",
author = "Minsung Kim and Jehoon Cho and Oh, {Tae Won}",
year = "2018",
month = "5",
day = "15",
doi = "10.1049/iet-com.2017.0999",
language = "English",
volume = "12",
pages = "932--940",
journal = "IET Communications",
issn = "1751-8628",
publisher = "Institution of Engineering and Technology",
number = "8",

}

TY - JOUR

T1 - EM-based poor slot update method for MIMO IDD receiver in fast time-varying channels

AU - Kim, Minsung

AU - Cho, Jehoon

AU - Oh, Tae Won

PY - 2018/5/15

Y1 - 2018/5/15

N2 - In this study, the authors propose an expectation-maximisation (EM)-based poor slot update method for multiple-input multiple-output (MIMO) iterative detection and decoding (IDD) receivers to increase their channel tracking capability in fast timevarying channels. The poor slots that trigger error propagation in a frame are selected, the channel state information is updated, and the updated recursive least squares channel tracking algorithm is executed. The accurate channel tracking capability of this new channel updating technique contributes to a 3 dB improvement in the bit error rate performance of an IDD receiver in a fast mobile environment ( > 180 km/h). The authors also demonstrate that an ~ 20 - 25% complexity reduction can be achieved under various conditions.

AB - In this study, the authors propose an expectation-maximisation (EM)-based poor slot update method for multiple-input multiple-output (MIMO) iterative detection and decoding (IDD) receivers to increase their channel tracking capability in fast timevarying channels. The poor slots that trigger error propagation in a frame are selected, the channel state information is updated, and the updated recursive least squares channel tracking algorithm is executed. The accurate channel tracking capability of this new channel updating technique contributes to a 3 dB improvement in the bit error rate performance of an IDD receiver in a fast mobile environment ( > 180 km/h). The authors also demonstrate that an ~ 20 - 25% complexity reduction can be achieved under various conditions.

UR - http://www.scopus.com/inward/record.url?scp=85046105319&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85046105319&partnerID=8YFLogxK

U2 - 10.1049/iet-com.2017.0999

DO - 10.1049/iet-com.2017.0999

M3 - Article

VL - 12

SP - 932

EP - 940

JO - IET Communications

JF - IET Communications

SN - 1751-8628

IS - 8

ER -