Modulation Scheme Based on Precoder Matrix for MIMO Optical Wireless Communication Systems

A modulation scheme for multiple-input multiple-output (MIMO) optical wireless systems that employ intensity modulation (IM) is proposed. This scheme, called precoder matrix modulation (PMM), exploits the properties of MIMO optical wireless communications to translate the spatial dimension into the...

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Bibliographic Details
Published in:IEEE communications letters Vol. 16; no. 9; pp. 1516 - 1519
Main Authors: Wu, Liang, Zhang, Zaichen, Liu, Huaping
Format: Journal Article
Language:English
Published: New York, NY IEEE 01.09.2012
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Applied sciences
Coding, codes
Constellations
Exact sciences and technology
Information, signal and communications theory
Light-emitting diodes
MIMO
Modulation
multiple-input multiple-output (MIMO)
Optical modulation
Optical properties
Optical receivers
Optical telecommunications
Optical transmitters
Optical wireless communications
precoding
Radiocommunications
Shortages
Signal and communications theory
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Transmitters
Transmitters. Receivers
Wireless communication
Wireless communication systems
Wireless optical communications
Performance evaluation
MIMO system
Optical wireless communications
modulation
Optical telecommunication
Coding circuit
Wireless telecommunication
Transmitter
multiple-input multiple-output (MIMO)
precoding
Light emitting diode
Free space propagation
Coding
Pulse amplitude modulation
Pretreatment
Intensity modulation
Free space optics
ISSN:1089-7798, 1558-2558
Online Access:Get full text
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Description
Summary:A modulation scheme for multiple-input multiple-output (MIMO) optical wireless systems that employ intensity modulation (IM) is proposed. This scheme, called precoder matrix modulation (PMM), exploits the properties of MIMO optical wireless communications to translate the spatial dimension into the constellation parameters by using a 'precoder matrix'. The transmitted signals in PMM are guaranteed to be nonnegative, as required in IM optical wireless communications. Existing schemes such as pulse-amplitude modulation could be used in such systems, but the proposed scheme has a much better performance. The constellation size of PMM can be flexibly increased, mitigating the bandwidth shortage issue due to the limitation of light emitting diodes (the transmitters).
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ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2012.071612.120973