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Erschienen in: Wireless Personal Communications 1/2014

01.09.2014

Transmit Beamforming for MIMO Optical Wireless Communication Systems

verfasst von: Liang Wu, Zaichen Zhang, Huaping Liu

Erschienen in: Wireless Personal Communications | Ausgabe 1/2014

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Abstract

This paper focuses on transmit beamforming for multiple-input multiple-output optical wireless communication (OWC) systems with intensity modulation and direct detection (IM/DD). OWC with IM/DD requires the transmitted signals to be nonnegative, for which existing beamforming schemes developed for radio frequency systems cannot be applied directly. We propose effective schemes for OWC over frequency flat and frequency selective channels. For frequency flat fading, the property of the beamforming vector is derived. For frequency selective fading, bit-error rate performances of the proposed scheme with zero-forcing and minimum mean-square error frequency domain equalization receivers are derived, and a suboptimal beamforming vector for frequency selective fading channels is proposed. Compared with asymmetrically clipped optical orthogonal frequency division multiplexing based frequency domain beamforming, the proposed scheme needs much less feedback information and has a better error performance.

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Metadaten
Titel
Transmit Beamforming for MIMO Optical Wireless Communication Systems
verfasst von
Liang Wu
Zaichen Zhang
Huaping Liu
Publikationsdatum
01.09.2014
Verlag
Springer US
Erschienen in
Wireless Personal Communications / Ausgabe 1/2014
Print ISSN: 0929-6212
Elektronische ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-014-1774-3

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