Complexity reduction in joint decoding of block coded signals in overloaded MIMO-OFDM system

Yoshihito Doi, Mamiko Inamori, Yukitoshi Sanada

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This paper presents a low complexity joint decoding scheme of block coded signals in an overloaded multiple-input multipleoutput (MIMO) orthogonal frequency division multiplexing (OFDM) system. In previous literature, a joint maximum likelihood decoding scheme of block coded signals has been evaluated through theoretical analysis. The diversity gain with block coding prevents the performance degradation induced by signal multiplexing. However, the computational complexity of the joint decoding scheme increases exponentially with the number of multiplexed signal streams. Thus, this paper proposes a two step joint decoding scheme for block coded signals. The first step of the proposed scheme calculates metrics to reduce the number of the candidate codewords using decoding based on joint maximum likelihood symbol detection. The second step of the proposed scheme carries out joint decoding on the reduced candidate codewords. It is shown that the proposed scheme reduces the complexity by about 1/174 for 4 signal stream transmission.

Original languageEnglish
Pages (from-to)905-914
Number of pages10
JournalIEICE Transactions on Communications
VolumeE97-B
Issue number4
DOIs
Publication statusPublished - 2014

Fingerprint

Orthogonal frequency division multiplexing
Decoding
Maximum likelihood
Multiplexing
Computational complexity
Degradation

Keywords

  • Joint maximum likelihood decoding
  • Multiple-input multiple-output (MIMO)
  • Overloaded MIMO

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications
  • Software

Cite this

Complexity reduction in joint decoding of block coded signals in overloaded MIMO-OFDM system. / Doi, Yoshihito; Inamori, Mamiko; Sanada, Yukitoshi.

In: IEICE Transactions on Communications, Vol. E97-B, No. 4, 2014, p. 905-914.

Research output: Contribution to journalArticle

@article{b4c38e81f2aa48fdb1ec5b4a1127a639,
title = "Complexity reduction in joint decoding of block coded signals in overloaded MIMO-OFDM system",
abstract = "This paper presents a low complexity joint decoding scheme of block coded signals in an overloaded multiple-input multipleoutput (MIMO) orthogonal frequency division multiplexing (OFDM) system. In previous literature, a joint maximum likelihood decoding scheme of block coded signals has been evaluated through theoretical analysis. The diversity gain with block coding prevents the performance degradation induced by signal multiplexing. However, the computational complexity of the joint decoding scheme increases exponentially with the number of multiplexed signal streams. Thus, this paper proposes a two step joint decoding scheme for block coded signals. The first step of the proposed scheme calculates metrics to reduce the number of the candidate codewords using decoding based on joint maximum likelihood symbol detection. The second step of the proposed scheme carries out joint decoding on the reduced candidate codewords. It is shown that the proposed scheme reduces the complexity by about 1/174 for 4 signal stream transmission.",
keywords = "Joint maximum likelihood decoding, Multiple-input multiple-output (MIMO), Overloaded MIMO",
author = "Yoshihito Doi and Mamiko Inamori and Yukitoshi Sanada",
year = "2014",
doi = "10.1587/transcom.E97.B.905",
language = "English",
volume = "E97-B",
pages = "905--914",
journal = "IEICE Transactions on Communications",
issn = "0916-8516",
publisher = "Maruzen Co., Ltd/Maruzen Kabushikikaisha",
number = "4",

}

TY - JOUR

T1 - Complexity reduction in joint decoding of block coded signals in overloaded MIMO-OFDM system

AU - Doi, Yoshihito

AU - Inamori, Mamiko

AU - Sanada, Yukitoshi

PY - 2014

Y1 - 2014

N2 - This paper presents a low complexity joint decoding scheme of block coded signals in an overloaded multiple-input multipleoutput (MIMO) orthogonal frequency division multiplexing (OFDM) system. In previous literature, a joint maximum likelihood decoding scheme of block coded signals has been evaluated through theoretical analysis. The diversity gain with block coding prevents the performance degradation induced by signal multiplexing. However, the computational complexity of the joint decoding scheme increases exponentially with the number of multiplexed signal streams. Thus, this paper proposes a two step joint decoding scheme for block coded signals. The first step of the proposed scheme calculates metrics to reduce the number of the candidate codewords using decoding based on joint maximum likelihood symbol detection. The second step of the proposed scheme carries out joint decoding on the reduced candidate codewords. It is shown that the proposed scheme reduces the complexity by about 1/174 for 4 signal stream transmission.

AB - This paper presents a low complexity joint decoding scheme of block coded signals in an overloaded multiple-input multipleoutput (MIMO) orthogonal frequency division multiplexing (OFDM) system. In previous literature, a joint maximum likelihood decoding scheme of block coded signals has been evaluated through theoretical analysis. The diversity gain with block coding prevents the performance degradation induced by signal multiplexing. However, the computational complexity of the joint decoding scheme increases exponentially with the number of multiplexed signal streams. Thus, this paper proposes a two step joint decoding scheme for block coded signals. The first step of the proposed scheme calculates metrics to reduce the number of the candidate codewords using decoding based on joint maximum likelihood symbol detection. The second step of the proposed scheme carries out joint decoding on the reduced candidate codewords. It is shown that the proposed scheme reduces the complexity by about 1/174 for 4 signal stream transmission.

KW - Joint maximum likelihood decoding

KW - Multiple-input multiple-output (MIMO)

KW - Overloaded MIMO

UR - http://www.scopus.com/inward/record.url?scp=84897396644&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84897396644&partnerID=8YFLogxK

U2 - 10.1587/transcom.E97.B.905

DO - 10.1587/transcom.E97.B.905

M3 - Article

AN - SCOPUS:84897396644

VL - E97-B

SP - 905

EP - 914

JO - IEICE Transactions on Communications

JF - IEICE Transactions on Communications

SN - 0916-8516

IS - 4

ER -