Hemispherical lens based imaging receiver for MIMO optical wireless communications

Wang, TQ; Sekercioglu, YA; Armstrong, J

Hemispherical lens based imaging receiver for MIMO optical wireless communications

Wang, TQ

Sekercioglu, YA Armstrong, J

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Publication Type:: Conference Proceeding
Citation:: 2012 IEEE Globecom Workshops, GC Wkshps 2012, 2012, pp. 1239 - 1243
Issue Date:: 2012-12-01

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Field	Value	Language
dc.contributor.author	Wang, TQ https://orcid.org/0000-0002-2326-4549	en_US
dc.contributor.author	Sekercioglu, YA	en_US
dc.contributor.author	Armstrong, J	en_US
dc.date.issued	2012-12-01	en_US
dc.identifier.citation	2012 IEEE Globecom Workshops, GC Wkshps 2012, 2012, pp. 1239 - 1243	en_US
dc.identifier.isbn	9781467349413	en_US
dc.identifier.uri	http://hdl.handle.net/10453/120914
dc.description.abstract	White lighting LED based systems are emerging as an important form of high data rate communications, especially for indoor applications. Two limitations of existing systems are the small field of view of typical receivers and the poor performance of optical wireless MIMO due to lack of spatial diversity. In this paper we describe a novel design which overcomes these problems by using a hemispherical lens in the receiver. We show that the new system has a wide field of view and also provides significant spatial diversity for typical MIMO visible light scenarios. Numerical results are provided for a range of LED transmitters with different half power semi-angles. Our analysis shows that systems can be designed with adequate channel gain for angles of incidence as large as 70 degrees. The optical power density is also calculated to show the received optical power distributions for the case of four LED transmitters. The results indicate that the images of the LEDs are clearly separated. This reduces the channel correlations between individual transmitters and receivers and thus promises a significant diversity order for MIMO optical wireless systems. © 2012 IEEE.	en_US
dc.relation.ispartof	2012 IEEE Globecom Workshops, GC Wkshps 2012	en_US
dc.relation.isbasedon	10.1109/GLOCOMW.2012.6477758	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	Hemispherical lens based imaging receiver for MIMO optical wireless communications	en_US
dc.type	Conference Proceeding
utslib.for	020504 Photonics, Optoelectronics and Optical Communications	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
pubs.publication-status	Published	en_US

Abstract:

White lighting LED based systems are emerging as an important form of high data rate communications, especially for indoor applications. Two limitations of existing systems are the small field of view of typical receivers and the poor performance of optical wireless MIMO due to lack of spatial diversity. In this paper we describe a novel design which overcomes these problems by using a hemispherical lens in the receiver. We show that the new system has a wide field of view and also provides significant spatial diversity for typical MIMO visible light scenarios. Numerical results are provided for a range of LED transmitters with different half power semi-angles. Our analysis shows that systems can be designed with adequate channel gain for angles of incidence as large as 70 degrees. The optical power density is also calculated to show the received optical power distributions for the case of four LED transmitters. The results indicate that the images of the LEDs are clearly separated. This reduces the channel correlations between individual transmitters and receivers and thus promises a significant diversity order for MIMO optical wireless systems. © 2012 IEEE.

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