A5090389895- Optical Wireless Communication Technologies
- PAPR reduction in OFDM
- Advanced Photonic Communication Systems
- Optical Network Technologies
- Power Line Communications and Noise
McMaster University
2014-2024
Visible-light communication (VLC) systems leverage solid-state illumination devices to create high-speed links. Orthogonal frequency-division multiplexing (OFDM) has been considered for these intensity-modulated/direct-detection (IM/DD) optical channels, however, it suffers from high peak-to-average power ratio (PAPR). Moreover, the implementation of linear, power-efficient, high-current, wideband drivers is challenging. In this paper, concept spatial summing developed where wideband, PAPR...
Visible light communication (VLC) channels leverage solid-state illumination devices to provide a dual role as high-speed links. These are bandwidth-limited and can have high SNRs. Bandwidth-efficient intensity-modulated/direct-detection (IM/DD) orthogonal frequency-division multiplexing (OFDM) has been considered for VLC systems. Key drawbacks of OFDM in IM/DD its peak-to-average power ratio (PAPR) well the difficulty implementing efficient, current, wideband drivers. In this paper, we...
This paper proposes a low-complexity scheme for the integration of power-line communication (PLC) and visible-light (VLC) systems. Rather than decoding PLC signal prior to transmission from an LED luminary, simple all-analog PLC/VLC amplify-and-forward (AF) module is described. The incoming signals, which occupy band 2-28 MHz, are frequency down-shifted increase usable bandwidth LEDs. required DC bias then added make signals compatible with intensity modulation/direct detection (IM/DD). In...
Visible light communication (VLC) systems leverage illumination devices, such as light-emitting diodes (LEDs), to serve a dual role indoor high-speed downlinks. Though high data rates are possible using orthogonal frequency-division (OFDM) in VLC systems, the impact on complexity and luminous efficacy of luminaire remain among key challenges. In this paper, <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">square-wave spatial optical OFDM</i>...