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Cooperative linear precoding for multi-user MISO visible light communications

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10.1109/GLOCOM.2017.8254780
 
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hdl:2117/114640

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Viñals Terrés, Roser
Muñoz Medina, OlgaMés informacióMés informacióMés informació
Agustín de Dios, AdriánMés informacióMés informació
Vidal Manzano, JoséMés informacióMés informacióMés informació
Document typeConference report
Defense date2017
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Rights accessOpen Access
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
This paper develops and evaluates precoding techniques for coordinated joint transmission in visible light communications (VLC). A multi-user multiple-input single-output (MISO) setup is adopted. Transmitters are equipped with light emitting diode (LED) arrays, while receivers incorporate a single photodetector (PD). We design zero forcing (ZF) linear precoders considering, as figure of merit, the weighted sumrate for multilevel pulse amplitude modulation (PAM) and take into account the optical power constraints. We present two approaches. First, we formulate the design as a convex optimization problem and find its exact solution. Second, by considering certain approximations, we find an alternative precoder that despite being suboptimal can be computed in an almost closed-form, achieving a good trade-off between performance and complexity. Finally, we demonstrate that the proposed approaches largely outperform the conventional pseudo-inverse precoding and single-user TDMA approaches
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© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes,creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
CitationViñals, R., Muñoz, O., Agustin, A., Vidal, J. Cooperative linear precoding for multi-user MISO visible light communications. A: IEEE Global Communications Conference. "2017 IEEE Global Communications Conference (GLOBECOM): proceedings: Singapore: 4-8 December 2017". Singapur: Institute of Electrical and Electronics Engineers (IEEE), 2017. 
URIhttp://hdl.handle.net/2117/114640
DOI10.1109/GLOCOM.2017.8254780
ISBN978-1-5090-5019-2
Publisher versionhttp://ieeexplore.ieee.org/document/8254780/
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