Effective information rates of single-carrier and multi-carrier modulation schemes for bandwidth constrained IM/DD systems

Handle URI:
http://hdl.handle.net/10754/625710
Title:
Effective information rates of single-carrier and multi-carrier modulation schemes for bandwidth constrained IM/DD systems
Authors:
Mazahir, Sana; Chaaban, Anas ( 0000-0002-8713-5084 ) ; Elgala, Hany; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 )
Abstract:
Information-theoretic and signal processing aspects of some modulation schemes designed for intensity modulation/direct detection (IM/DD) optical wireless communication (OWC) systems are studied. Due to the constraints of IM/DD signals (non-negative real and baseband signals), the construction of these signals along with their time and frequency characteristics differ from their RF counterparts. This necessitates a careful study of such schemes under practical constraints. Three schemes are studied in this paper, namely, single carrier pulse amplitude modulation (SC-PAM), asymmetrically clipped optical OFDM (ACO-OFDM), and DC biased optical OFDM (DCO-OFDM). Our aim is to carry out a comparative study of these schemes in the presence of identical constraints on bandwidth and average optical power. The study reveals that the clipping operation required in ACO-OFDM significantly reduces its information rate, and as a result, it is outperformed by SC-PAM. Such a limitation does not apply to DCO-OFDM which has a higher information rate, even though part of the available optical power is expended in the non-information-bearing DC bias.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Citation:
Mazahir S, Chaaban A, Elgala H, Alouini M-S (2017) Effective information rates of single-carrier and multi-carrier modulation schemes for bandwidth constrained IM/DD systems. 2017 IEEE International Conference on Communications (ICC). Available: http://dx.doi.org/10.1109/icc.2017.7997325.
Publisher:
IEEE
Journal:
2017 IEEE International Conference on Communications (ICC)
Conference/Event name:
2017 IEEE International Conference on Communications, ICC 2017
Issue Date:
31-Jul-2017
DOI:
10.1109/icc.2017.7997325
Type:
Conference Paper
Additional Links:
http://ieeexplore.ieee.org/document/7997325/
Appears in Collections:
Conference Papers; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorMazahir, Sanaen
dc.contributor.authorChaaban, Anasen
dc.contributor.authorElgala, Hanyen
dc.contributor.authorAlouini, Mohamed-Slimen
dc.date.accessioned2017-10-03T12:49:35Z-
dc.date.available2017-10-03T12:49:35Z-
dc.date.issued2017-07-31en
dc.identifier.citationMazahir S, Chaaban A, Elgala H, Alouini M-S (2017) Effective information rates of single-carrier and multi-carrier modulation schemes for bandwidth constrained IM/DD systems. 2017 IEEE International Conference on Communications (ICC). Available: http://dx.doi.org/10.1109/icc.2017.7997325.en
dc.identifier.doi10.1109/icc.2017.7997325en
dc.identifier.urihttp://hdl.handle.net/10754/625710-
dc.description.abstractInformation-theoretic and signal processing aspects of some modulation schemes designed for intensity modulation/direct detection (IM/DD) optical wireless communication (OWC) systems are studied. Due to the constraints of IM/DD signals (non-negative real and baseband signals), the construction of these signals along with their time and frequency characteristics differ from their RF counterparts. This necessitates a careful study of such schemes under practical constraints. Three schemes are studied in this paper, namely, single carrier pulse amplitude modulation (SC-PAM), asymmetrically clipped optical OFDM (ACO-OFDM), and DC biased optical OFDM (DCO-OFDM). Our aim is to carry out a comparative study of these schemes in the presence of identical constraints on bandwidth and average optical power. The study reveals that the clipping operation required in ACO-OFDM significantly reduces its information rate, and as a result, it is outperformed by SC-PAM. Such a limitation does not apply to DCO-OFDM which has a higher information rate, even though part of the available optical power is expended in the non-information-bearing DC bias.en
dc.publisherIEEEen
dc.relation.urlhttp://ieeexplore.ieee.org/document/7997325/en
dc.titleEffective information rates of single-carrier and multi-carrier modulation schemes for bandwidth constrained IM/DD systemsen
dc.typeConference Paperen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.identifier.journal2017 IEEE International Conference on Communications (ICC)en
dc.conference.date2017-05-21 to 2017-05-25en
dc.conference.name2017 IEEE International Conference on Communications, ICC 2017en
dc.conference.locationParis, FRAen
dc.contributor.institutionSchool of Electrical Engineering and Computer Science (SEECS), National University of Sciences and Technology (NUST), Islamabad, Pakistan.en
dc.contributor.institutionComputer Engineering Department at the University at Albany - State University of New York (SUNY), USA.en
kaust.authorChaaban, Anasen
kaust.authorAlouini, Mohamed-Slimen
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