On the optimality of training signals for MMSE channel estimation in MIMO-OFDM systems
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jo, Junho | - |
dc.contributor.author | Sohn, Illsoo | - |
dc.date.available | 2020-02-28T09:44:35Z | - |
dc.date.created | 2020-02-06 | - |
dc.date.issued | 2015-04-16 | - |
dc.identifier.issn | 1687-1499 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/10602 | - |
dc.description.abstract | In this paper, we investigate the optimality of training signals for linear minimum mean square error (LMMSE) channel estimation in multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) with frequency-selective fading channels. This is a very challenging problem due to its mathematical intractability and has not been analytically solved in the literature. Using the Lagrange multiplier method, we derive the optimality conditions for training signal design. Important findings revealed on optimal training signals are twofold: (i) the energies of the training signals on each subcarrier are equal, and (ii) on each subcarrier, the training signals transmitted from the different antennas are orthogonal and of equal energy. We verify that our results are in line with the design principles that have been derived in single-carrier MIMO systems. Two types of optimal training signal examples that satisfy the optimality conditions are presented for practical implementations in MIMO-OFDM systems. Simulation results show that the training signals based on the optimality conditions outperform other non-optimal training signals in terms of channel estimation performance. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | SPRINGER INTERNATIONAL PUBLISHING AG | - |
dc.relation.isPartOf | EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING | - |
dc.title | On the optimality of training signals for MMSE channel estimation in MIMO-OFDM systems | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.identifier.wosid | 000209859200001 | - |
dc.identifier.doi | 10.1186/s13638-015-0345-y | - |
dc.identifier.bibliographicCitation | EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING | - |
dc.identifier.scopusid | 2-s2.0-84928746098 | - |
dc.citation.title | EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING | - |
dc.contributor.affiliatedAuthor | Sohn, Illsoo | - |
dc.type.docType | Article | - |
dc.subject.keywordAuthor | Optimal training signal | - |
dc.subject.keywordAuthor | MMSE channel estimation | - |
dc.subject.keywordAuthor | MIMO | - |
dc.subject.keywordAuthor | OFDM | - |
dc.subject.keywordAuthor | Frequency-selective fading | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Telecommunications | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic | - |
dc.relation.journalWebOfScienceCategory | Telecommunications | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
1342, Seongnam-daero, Sujeong-gu, Seongnam-si, Gyeonggi-do, Republic of Korea(13120)031-750-5114
COPYRIGHT 2020 Gachon University All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.