SM/SPPM Aided Multiuser Precoded Visible Light Communication Systems
| Autor: | Ming Jiang, Kunyi Cai |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
lcsh:Applied optics. Photonics
multiple-input multiple-output (MIMO) spatial pulse position modulation (SPPM) Computer science Orthogonal frequency-division multiplexing MIMO Visible light communication 02 engineering and technology Interference (wave propagation) spatial modulation (SM) 020210 optoelectronics & photonics Optics 0202 electrical engineering electronic engineering information engineering Electronic engineering lcsh:QC350-467 Electrical and Electronic Engineering optical orthogonal frequency division multiplexing (OFDM) business.industry lcsh:TA1501-1820 Spectral efficiency Visible light communication (VLC) Atomic and Molecular Physics and Optics Spatial multiplexing Modulation Pulse-position modulation multi-user precoder/precoded (MUP) business lcsh:Optics. Light |
| Zdroj: | IEEE Photonics Journal, Vol 8, Iss 2, Pp 1-9 (2016) |
| ISSN: | 1943-0655 |
| Popis: | In this paper, we propose a multiuser precoded visible light communication (VLC) system utilizing optical orthogonal frequency division multiplexing (OFDM), where optical spatial modulation (OSM) and spatial pulse position modulation (SPPM) are invoked for supporting high-rate data transmissions without compromising uniform illumination across multiple light-emitting diodes (LEDs). Both OSM and SPPM exploit the index of data streams for carrying additional information bits, whereas the multiuser interference occurring between different user equipments is mitigated by the MIMO precoder. By evaluating the performances of the proposed VLC systems, we demonstrate that the OSM-aided system is capable of achieving high data rates at sufficiently high signal-to-noise ratios (SNRs). In contrast, the SPPM-aided system has a higher effective bandwidth efficiency at low SNRs, despite the fact that its attainable peak data rate is lower than that of the SM-aided counterpart. Such tradeoffs indicate the potential application scenarios of the proposed schemes for achieving diverse design prerequisites. |
| Databáze: | OpenAIRE |
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