Show simple item record

dc.contributor.authorYesilkaya, Anil
dc.contributor.authorPurwita, Ardimas Andi
dc.contributor.authorPanayirci, Erdal
dc.contributor.authorPoor, H. Vincent
dc.contributor.authorHaas, Harald
dc.date.accessioned2021-04-19T09:19:17Z
dc.date.available2021-04-19T09:19:17Z
dc.date.issued2020-12
dc.identifier.citationYesilkaya, A., Purwita, A. A., Panayirci, E., Poor, H. V., & Haas, H. (2020). Flexible LED Index Modulation for MIMO Optical Wireless Communications. GLOBECOM 2020 - 2020 IEEE Global Communications Conference. doi:10.1109/globecom42002.2020.9322528
dc.identifier.isbn9781728182988
dc.identifier.doi10.1109/globecom42002.2020.9322528
dc.identifier.urihttp://hdl.handle.net/10754/668845
dc.description.abstractThe limited bandwidth of optical wireless communication (OWC) front-end devices motivates the use of multipleinput- multiple-output (MIMO) techniques to enhance data rates. It is known that very high multiplexing gains can be achieved by spatial multiplexing (SMX) at the cost of prohibitive detection complexity. Alternatively, in spatial modulation (SM), a single light emitting diode (LED) is activated per time instance where information is carried by both the signal and the LED index. Since only one LED is active, both the transmitter (TX) and receiver (RX) complexity reduce significantly while retaining the information transmission in the spatial domain. However, this simplified TX utilization approach leads SM to suffer from significant spectral efficiency losses compared to SMX. In this paper, we propose a technique that benefits from the advantages of both systems. Accordingly, the proposed flexible LED index modulation (FLIM) technique harnesses the inactive state of the LEDs as a transmit symbol. Therefore, the number of active LEDs changes in each transmission, unlike conventional techniques. Moreover, the system complexity is reduced by employing a linear minimum mean squared error (MMSE) equalizer and an angle perturbed receiver. Numerical results show that FLIM outperforms the reference systems by at least 6 dB in the low and medium/high spectral efficiency regions.
dc.description.sponsorshipThis work was supported by EPSRC under Established Career Fellowship Grant EP/R007101/1. This work was also supported in part by the Scientific and Technical Research Council of Turkey (TUBITAK) under the 1003- Priority Areas R&D Projects support Program No. 218E034 and KAUST under Grant No. OSR-2016-CRG5-2958-02. A. Yesilkaya acknowledges the financial support from Zodiac Inflight Innovations (TriaGnoSys GmbH). A. A. Purwita acknowledges the financial support from Indonesian Endowment Fund for Education (LPDP). H. Haas acknowledges support from the Wolfson Foundation and the Royal Society.
dc.publisherIEEE
dc.relation.urlhttps://ieeexplore.ieee.org/document/9322528/
dc.rightsArchived with thanks to IEEE
dc.titleFlexible LED Index Modulation for MIMO Optical Wireless Communications
dc.typeConference Paper
dc.conference.date2020-12-07 to 2020-12-11
dc.conference.name2020 IEEE Global Communications Conference, GLOBECOM 2020
dc.conference.locationVirtual, Taipei, TWN
dc.eprint.versionPost-print
dc.contributor.institutionUniversity of Edinburgh, Institute for Digital Communications, LiFi RandD Centre, Edinburgh, UK EH9 3JL
dc.contributor.institutionDepartment of Electrical and Electronics Engineering, Kadir Has University, 34083, Istanbul, Turkey
dc.contributor.institutionDepartment of Electrical Engineering, Princeton University, NJ-08544, USA
kaust.grant.numberOSR-2016-CRG5-2958-02
dc.identifier.eid2-s2.0-85100401491
kaust.acknowledged.supportUnitCRG
kaust.acknowledged.supportUnitOSR


This item appears in the following Collection(s)

Show simple item record