A comparison of OFDM-based modulation schemes for OWC with clipping distortion

Svilen Dimitrov; Sinan Sinanovic; Harald Haas

doi:10.1109/GLOCOMW.2011.6162562

A comparison of OFDM-based modulation schemes for OWC with clipping distortion

Svilen Dimitrov, Sinan Sinanovic, Harald Haas

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In this paper, the electrical power requirement and spectral efficiency of multi-carrier transmission schemes for optical wireless communications (OWC) are compared in the presence of front-end-induced double-sided signal clipping. The two existing multi-carrier modulation techniques based on orthogonal frequency division multiplexing (OFDM), direct-current-biased optical OFDM (DCO-OFDM) and asymmetrically clipped optical OFDM (ACO-OFDM), are studied. The clipping noise can be modeled according to the Bussgang theorem and the central limit theorem (CLT) as attenuation of the data-carrying subcarriers and addition of zero-mean complex-valued Gaussian noise. Presented closed-form expressions for the attenuation factor and the clipping noise variance are employed in the derivation of the effective electrical signal-to-noise ratio (SNR).

Original language	English
Title of host publication	IEEE GLOBECOM Workshops (GC Wkshps), 2011
Publisher	IEEE
Pages	787-791
Number of pages	5
ISBN (Print)	9781467300391
DOIs	https://doi.org/10.1109/GLOCOMW.2011.6162562
Publication status	Published - 2011

Keywords

optical wireless communications
power systems
OFDM
modulation

Documents and Links

10.1109/GLOCOMW.2011.6162562

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title = "A comparison of OFDM-based modulation schemes for OWC with clipping distortion",

abstract = "In this paper, the electrical power requirement and spectral efficiency of multi-carrier transmission schemes for optical wireless communications (OWC) are compared in the presence of front-end-induced double-sided signal clipping. The two existing multi-carrier modulation techniques based on orthogonal frequency division multiplexing (OFDM), direct-current-biased optical OFDM (DCO-OFDM) and asymmetrically clipped optical OFDM (ACO-OFDM), are studied. The clipping noise can be modeled according to the Bussgang theorem and the central limit theorem (CLT) as attenuation of the data-carrying subcarriers and addition of zero-mean complex-valued Gaussian noise. Presented closed-form expressions for the attenuation factor and the clipping noise variance are employed in the derivation of the effective electrical signal-to-noise ratio (SNR). ",

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AU - Dimitrov, Svilen

AU - Sinanovic, Sinan

AU - Haas, Harald

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N2 - In this paper, the electrical power requirement and spectral efficiency of multi-carrier transmission schemes for optical wireless communications (OWC) are compared in the presence of front-end-induced double-sided signal clipping. The two existing multi-carrier modulation techniques based on orthogonal frequency division multiplexing (OFDM), direct-current-biased optical OFDM (DCO-OFDM) and asymmetrically clipped optical OFDM (ACO-OFDM), are studied. The clipping noise can be modeled according to the Bussgang theorem and the central limit theorem (CLT) as attenuation of the data-carrying subcarriers and addition of zero-mean complex-valued Gaussian noise. Presented closed-form expressions for the attenuation factor and the clipping noise variance are employed in the derivation of the effective electrical signal-to-noise ratio (SNR).

AB - In this paper, the electrical power requirement and spectral efficiency of multi-carrier transmission schemes for optical wireless communications (OWC) are compared in the presence of front-end-induced double-sided signal clipping. The two existing multi-carrier modulation techniques based on orthogonal frequency division multiplexing (OFDM), direct-current-biased optical OFDM (DCO-OFDM) and asymmetrically clipped optical OFDM (ACO-OFDM), are studied. The clipping noise can be modeled according to the Bussgang theorem and the central limit theorem (CLT) as attenuation of the data-carrying subcarriers and addition of zero-mean complex-valued Gaussian noise. Presented closed-form expressions for the attenuation factor and the clipping noise variance are employed in the derivation of the effective electrical signal-to-noise ratio (SNR).

KW - optical wireless communications

KW - power systems

KW - OFDM

KW - modulation

U2 - 10.1109/GLOCOMW.2011.6162562

DO - 10.1109/GLOCOMW.2011.6162562

M3 - Conference contribution

SN - 9781467300391

SP - 787

EP - 791

BT - IEEE GLOBECOM Workshops (GC Wkshps), 2011

PB - IEEE

ER -