Sum MSE minimization for downlink multi-relay multi-user MIMO network

Young Min Cho, Janghoon Yang, Jeongwook Seo, Dong Ku Kim

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We propose methods of linear transceiver design for two different power constraints, sum relay power constraint and per relay power constraint, which determine signal processing matrices such as base station (BS) transmitter, relay precoders and user receivers to minimize sum mean square error (SMSE) for multi-relay multi-user (MRMU) networks. However, since the formulated problem is non-convex one which is hard to be solved, we suboptimally solve the problems by defining convex subproblems with some fixed variables. We adopt iterative sequential designs of which each iteration stage corresponds to each subproblem. Karush-Kuhn-Tucker (KKT) theorem and SMSE duality are employed as specific methods to solve subproblems. The numerical results verify that the proposed methods provide comparable performance to that of a full relay cooperation bound (FRCB) method while outperforming the simple amplify-and-forward (SAF) and minimum mean square error (MMSE) relaying in terms of not only SMSE, but also the sum rate.

Original languageEnglish
Pages (from-to)2722-2742
Number of pages21
JournalKSII Transactions on Internet and Information Systems
Volume8
Issue number8
DOIs
Publication statusPublished - 2014 Aug 29

Fingerprint

MIMO systems
Mean square error
Telecommunication repeaters
Transceivers
Base stations
Transmitters
Signal processing

All Science Journal Classification (ASJC) codes

  • Information Systems
  • Computer Networks and Communications

Cite this

Cho, Young Min ; Yang, Janghoon ; Seo, Jeongwook ; Kim, Dong Ku. / Sum MSE minimization for downlink multi-relay multi-user MIMO network. In: KSII Transactions on Internet and Information Systems. 2014 ; Vol. 8, No. 8. pp. 2722-2742.
@article{2bdca593cea54cf89422f83615ed8c86,
title = "Sum MSE minimization for downlink multi-relay multi-user MIMO network",
abstract = "We propose methods of linear transceiver design for two different power constraints, sum relay power constraint and per relay power constraint, which determine signal processing matrices such as base station (BS) transmitter, relay precoders and user receivers to minimize sum mean square error (SMSE) for multi-relay multi-user (MRMU) networks. However, since the formulated problem is non-convex one which is hard to be solved, we suboptimally solve the problems by defining convex subproblems with some fixed variables. We adopt iterative sequential designs of which each iteration stage corresponds to each subproblem. Karush-Kuhn-Tucker (KKT) theorem and SMSE duality are employed as specific methods to solve subproblems. The numerical results verify that the proposed methods provide comparable performance to that of a full relay cooperation bound (FRCB) method while outperforming the simple amplify-and-forward (SAF) and minimum mean square error (MMSE) relaying in terms of not only SMSE, but also the sum rate.",
author = "Cho, {Young Min} and Janghoon Yang and Jeongwook Seo and Kim, {Dong Ku}",
year = "2014",
month = "8",
day = "29",
doi = "10.3837/tiis.2014.08.009",
language = "English",
volume = "8",
pages = "2722--2742",
journal = "KSII Transactions on Internet and Information Systems",
issn = "1976-7277",
publisher = "Korea Society of Internet Information",
number = "8",

}

Sum MSE minimization for downlink multi-relay multi-user MIMO network. / Cho, Young Min; Yang, Janghoon; Seo, Jeongwook; Kim, Dong Ku.

In: KSII Transactions on Internet and Information Systems, Vol. 8, No. 8, 29.08.2014, p. 2722-2742.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Sum MSE minimization for downlink multi-relay multi-user MIMO network

AU - Cho, Young Min

AU - Yang, Janghoon

AU - Seo, Jeongwook

AU - Kim, Dong Ku

PY - 2014/8/29

Y1 - 2014/8/29

N2 - We propose methods of linear transceiver design for two different power constraints, sum relay power constraint and per relay power constraint, which determine signal processing matrices such as base station (BS) transmitter, relay precoders and user receivers to minimize sum mean square error (SMSE) for multi-relay multi-user (MRMU) networks. However, since the formulated problem is non-convex one which is hard to be solved, we suboptimally solve the problems by defining convex subproblems with some fixed variables. We adopt iterative sequential designs of which each iteration stage corresponds to each subproblem. Karush-Kuhn-Tucker (KKT) theorem and SMSE duality are employed as specific methods to solve subproblems. The numerical results verify that the proposed methods provide comparable performance to that of a full relay cooperation bound (FRCB) method while outperforming the simple amplify-and-forward (SAF) and minimum mean square error (MMSE) relaying in terms of not only SMSE, but also the sum rate.

AB - We propose methods of linear transceiver design for two different power constraints, sum relay power constraint and per relay power constraint, which determine signal processing matrices such as base station (BS) transmitter, relay precoders and user receivers to minimize sum mean square error (SMSE) for multi-relay multi-user (MRMU) networks. However, since the formulated problem is non-convex one which is hard to be solved, we suboptimally solve the problems by defining convex subproblems with some fixed variables. We adopt iterative sequential designs of which each iteration stage corresponds to each subproblem. Karush-Kuhn-Tucker (KKT) theorem and SMSE duality are employed as specific methods to solve subproblems. The numerical results verify that the proposed methods provide comparable performance to that of a full relay cooperation bound (FRCB) method while outperforming the simple amplify-and-forward (SAF) and minimum mean square error (MMSE) relaying in terms of not only SMSE, but also the sum rate.

UR - http://www.scopus.com/inward/record.url?scp=84906886493&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84906886493&partnerID=8YFLogxK

U2 - 10.3837/tiis.2014.08.009

DO - 10.3837/tiis.2014.08.009

M3 - Article

AN - SCOPUS:84906886493

VL - 8

SP - 2722

EP - 2742

JO - KSII Transactions on Internet and Information Systems

JF - KSII Transactions on Internet and Information Systems

SN - 1976-7277

IS - 8

ER -