Name
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 sum-rate 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. |
Year | Venue | Keywords |
|---|---|---|
2017 | IEEE Global Communications Conference | Visible light communications,Multi-user multiple-input single-output,Adaptive modulation,Zero forcing,Weighted sum-rate maximization |
Field | DocType | ISSN |
Computer science,Real-time computing,Visible light communication,Figure of merit,Electronic engineering,Photodetector,Time division multiple access,Pulse-amplitude modulation,Convex optimization,Precoding,Multi-user | Conference | 2334-0983 |
Citations | PageRank | References |
0 | 0.34 | 0 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Roser Vinals | 1 | 0 | 0.34 |
| Olga Muñoz | 2 | 121 | 28.31 |
| Adrian Agustin | 3 | 487 | 53.41 |
| J. Vidal | 4 | 636 | 66.15 |