On the diversity enhancement and power balancing of per-subcarrier antenna selection in OFDM systems

Handle URI:
http://hdl.handle.net/10754/564300
Title:
On the diversity enhancement and power balancing of per-subcarrier antenna selection in OFDM systems
Authors:
Park, Kihong; Ko, Youngchai; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 )
Abstract:
In this paper, we consider multi-carrier systems with multiple transmit antennas under a power balancing constraint. Applying transmit antenna selection and discrete rate adaptive modulation using M-ary quadrature amplitude modulation (QAM) according to the channel variation per subcarrier, we develop an optimal antenna selection scheme in terms of maximum spectral efficiency where all the possible grouping to send the same information bearing signals in a group of subcarriers are searched and the groups of subcarriers to provide the frequency diversity gain are formed. In addition, we propose a suboptimal method to reduce the computational complexity of the optimal method. The suboptimal scheme consider only the subcarriers under outage and those are combined sequentially until it meets a required SNR. Numerical results show that the proposed suboptimal method with diversity combining outperforms the optimal antenna selection without diversity combining introduced in [1], especially for low SNR region and offers the spectral efficiency close to that of the optimal method with diversity combining, while maintaining lower complexity. ©2010 IEEE.
KAUST Department:
Electrical Engineering Program; Physical Sciences and Engineering (PSE) Division; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Communication Theory Lab
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
2010 IEEE 72nd Vehicular Technology Conference - Fall
Conference/Event name:
2010 IEEE 72nd Vehicular Technology Conference Fall, VTC2010-Fall
Issue Date:
Sep-2010
DOI:
10.1109/VETECF.2010.5594473
Type:
Conference Paper
ISSN:
15502252
ISBN:
9781424435746
Appears in Collections:
Conference Papers; Physical Sciences and Engineering (PSE) Division; Electrical Engineering Program; Communication Theory Lab; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorPark, Kihongen
dc.contributor.authorKo, Youngchaien
dc.contributor.authorAlouini, Mohamed-Slimen
dc.date.accessioned2015-08-04T06:22:48Zen
dc.date.available2015-08-04T06:22:48Zen
dc.date.issued2010-09en
dc.identifier.isbn9781424435746en
dc.identifier.issn15502252en
dc.identifier.doi10.1109/VETECF.2010.5594473en
dc.identifier.urihttp://hdl.handle.net/10754/564300en
dc.description.abstractIn this paper, we consider multi-carrier systems with multiple transmit antennas under a power balancing constraint. Applying transmit antenna selection and discrete rate adaptive modulation using M-ary quadrature amplitude modulation (QAM) according to the channel variation per subcarrier, we develop an optimal antenna selection scheme in terms of maximum spectral efficiency where all the possible grouping to send the same information bearing signals in a group of subcarriers are searched and the groups of subcarriers to provide the frequency diversity gain are formed. In addition, we propose a suboptimal method to reduce the computational complexity of the optimal method. The suboptimal scheme consider only the subcarriers under outage and those are combined sequentially until it meets a required SNR. Numerical results show that the proposed suboptimal method with diversity combining outperforms the optimal antenna selection without diversity combining introduced in [1], especially for low SNR region and offers the spectral efficiency close to that of the optimal method with diversity combining, while maintaining lower complexity. ©2010 IEEE.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.titleOn the diversity enhancement and power balancing of per-subcarrier antenna selection in OFDM systemsen
dc.typeConference Paperen
dc.contributor.departmentElectrical Engineering Programen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentCommunication Theory Laben
dc.identifier.journal2010 IEEE 72nd Vehicular Technology Conference - Fallen
dc.conference.date6 September 2010 through 9 September 2010en
dc.conference.name2010 IEEE 72nd Vehicular Technology Conference Fall, VTC2010-Fallen
dc.conference.locationOttawa, ONen
dc.contributor.institutionSchool of Electrical Engineering, Korea University, Anam-dong Seongbuk-Gu, Seoul, 136-701, South Koreaen
kaust.authorAlouini, Mohamed-Slimen
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