On the power and offset allocation for rate adaptation of spatial multiplexing in optical wireless MIMO channels

Handle URI:
http://hdl.handle.net/10754/562711
Title:
On the power and offset allocation for rate adaptation of spatial multiplexing in optical wireless MIMO channels
Authors:
Park, Kihong ( 0000-0002-6867-4277 ) ; Ko, Youngchai; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 )
Abstract:
In this paper, we consider resource allocation method in the visible light communication. It is challenging to achieve high data rate due to the limited bandwidth of the optical sources. In order to increase the spectral efficiency, we design a suitable multiple-input multiple-output (MIMO) system utilizing spatial multiplexing based on singular value decomposition and adaptive modulation. More specifically, after explaining why the conventional allocation method in radio frequency MIMO channels cannot be applied directly to the optical intensity channels, we theoretically derive a power allocation method for an arbitrary number of transmit and receive antennas for optical wireless MIMO systems. Based on three key constraints: the nonnegativity of the intensity-modulated signal, the aggregate optical power budget, and the bit error rate requirement, we propose a novel method to allocate the optical power, the offset value, and the modulation size. Based on some selected simulation results, we show that our proposed allocation method gives a better spectral efficiency at the expense of an increased computational complexity in comparison to a simple method that allocates the optical power equally among all the data streams. © 2013 IEEE.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Electrical Engineering Program; Communication Theory Lab
Publisher:
Institute of Electrical and Electronics Engineers
Journal:
IEEE Transactions on Communications
Issue Date:
Apr-2013
DOI:
10.1109/TCOMM.2013.012913.110290
Type:
Article
ISSN:
00906778
Sponsors:
This work was funded in part by King Abdullah University of Science and Technology (KAUST), and supported in part by the KCC (Korea Communications Commission), Korea, under the R&D program supervised by the KCA (Korea Communications Agency) (KCA-2012-08-911-04-002).
Appears in Collections:
Articles; 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.accessioned2015-08-03T11:02:36Zen
dc.date.available2015-08-03T11:02:36Zen
dc.date.issued2013-04en
dc.identifier.issn00906778en
dc.identifier.doi10.1109/TCOMM.2013.012913.110290en
dc.identifier.urihttp://hdl.handle.net/10754/562711en
dc.description.abstractIn this paper, we consider resource allocation method in the visible light communication. It is challenging to achieve high data rate due to the limited bandwidth of the optical sources. In order to increase the spectral efficiency, we design a suitable multiple-input multiple-output (MIMO) system utilizing spatial multiplexing based on singular value decomposition and adaptive modulation. More specifically, after explaining why the conventional allocation method in radio frequency MIMO channels cannot be applied directly to the optical intensity channels, we theoretically derive a power allocation method for an arbitrary number of transmit and receive antennas for optical wireless MIMO systems. Based on three key constraints: the nonnegativity of the intensity-modulated signal, the aggregate optical power budget, and the bit error rate requirement, we propose a novel method to allocate the optical power, the offset value, and the modulation size. Based on some selected simulation results, we show that our proposed allocation method gives a better spectral efficiency at the expense of an increased computational complexity in comparison to a simple method that allocates the optical power equally among all the data streams. © 2013 IEEE.en
dc.description.sponsorshipThis work was funded in part by King Abdullah University of Science and Technology (KAUST), and supported in part by the KCC (Korea Communications Commission), Korea, under the R&D program supervised by the KCA (Korea Communications Agency) (KCA-2012-08-911-04-002).en
dc.publisherInstitute of Electrical and Electronics Engineersen
dc.subjectadaptive modulationen
dc.subjectdirect detectionen
dc.subjectintensity modulationen
dc.subjectoptical wireless MIMOen
dc.subjectrate adaptationen
dc.subjectVisible light communicationen
dc.titleOn the power and offset allocation for rate adaptation of spatial multiplexing in optical wireless MIMO channelsen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentElectrical Engineering Programen
dc.contributor.departmentCommunication Theory Laben
dc.identifier.journalIEEE Transactions on Communicationsen
dc.contributor.institutionSchool of Electrical Engineering, Korea University, Seoul, South Koreaen
kaust.authorPark, Kihongen
kaust.authorAlouini, Mohamed-Slimen
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