Experimental Comparison of PAM, CAP, and DMT Modulations in Phosphorescent White LED Transmission Link

Stępniak, Grzegorz; Maksymiuk, Lukasz; Siuzdak, J.

doi:10.1109/jphot.2015.2427092

Cited by 35 publications

(23 citation statements)

References 19 publications

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“…Comparison of PAM, CAP and DMT modulation in a VLC link using white phosphorescent lightemitting diode (LED) has been reported [36]. At data rates of 450 Gbps on 30 cm air-transmission, 2-level PAM and CAP modulations exhibit better immunity to nonlinear distortions and allow for lower BER than their 4-level counterparts.…”

Section: Cap Prospect In Optical Communication Systemmentioning

confidence: 99%

A Carrierless Amplitude Phase (CAP) Modulation Format: Perspective and Prospect in Optical Transmission System

Ridzuan

Abdullah

Othman

et al. 2018

IJECE

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The explosive demand of broadband services nowadays requires data communication systems to have intensive capacity which subsequently increases the need for higher data rate as well. Although implementation of multiple wavelengths channels can be used (e.g. 4 × 25.8 Gb/s for 100 Gb/s connection) for such desired system, it usually leads to cost increment issue which is caused by employment of multiple optical components. Therefore, implementation of advanced modulation format using a single wavelength channel has become a preference to increase spectral efficiency by increasing the data rate for a given transmission system bandwidth. Conventional advanced modulation format however, involves a degree of complexity and costly transmission system. Hence, carrierless amplitude phase (CAP) modulation format has emerged as a promising advanced modulation format candidate due to spectral efficiency improvement ability with reduction of optical transceiver complexity and cost. The intriguing properties of CAP modulation format are reviewed as an attractive prospect in optical transmission system applications.

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Section: Cap Prospect In Optical Communication Systemmentioning

confidence: 99%

A Carrierless Amplitude Phase (CAP) Modulation Format: Perspective and Prospect in Optical Transmission System

Ridzuan

Abdullah

Othman

et al. 2018

IJECE

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“…Though traditional DFE requires the least computational complexity, the performance is often unacceptable with a high bit error rate (BER) [4]. Furthermore, the theoretical and simulation studies in [5]- [7] T bit and power loading. Thus, in this study, we proposed an artificial neural network (ANN) for the joint temporal and spatial interference compensation for MIMO-VLC system with PAM scheme.…”

Section: Introductionmentioning

confidence: 99%

Neural Network-Based Joint Spatial and Temporal Equalization for MIMO-VLC System

Rajbhandari

Chun

Faulkner

et al. 2019

IEEE Photon. Technol. Lett.

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The limited bandwidth of white light emitting diode (LED) limits the achievable data rate in a visible light communication (VLC) system. A number of techniques including multiple-input-multiple-output (MIMO) system are investigated to improvements the data rate. The high-speed optical MIMO system suffers from both spatial and temporal cross-talks. Spatial cross-talk is often compensated by MIMO decoding algorithm while temporal cross-talk is mitigated using an equalizer. However, the LEDs has a non-linear transfer function and the performance of linear equalizers are limited. In this paper, we propose a joint spatial and temporal equalization using an artificial neural network (ANN) for a MIMO-VLC system. We demonstrate using a practical imaging/non-imaging optical MIMO link that the ANN-based joint equalization outperforms the joint equalization using a traditional decision feedback as ANN is able to compensate the non-linear transfer function as well as cross-talk.

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“…Carrierless amplitude and phase modulation (CAP) is one of the spectrally efficient modulation techniques, along with pulse amplitude modulation (PAM) and orthogonal frequency division multiplexing (OFDM), that are employed for improving the achievable throughput in VLC systems [1]. High data rates in the range of Gb/s have been demonstrated for VLC links using the CAP technique [2].…”

Section: Introductionmentioning

confidence: 99%

“…The main attraction for CAP is its simple transceiver [1]. Early work on CAP have mainly focussed on the design and implementation of equalization techniques to improve its performance [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Subband Index Carrierless Amplitude and Phase Modulation in Visible Light Communications

Akande

Popoola

2019

J. Lightwave Technol.

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An enhanced subband index carrierless amplitude and phase modulation (eSI-CAP) scheme is developed to improve the spectral efficiency of the multiband CAP (m-CAP) in visible light communication (VLC) systems. Using indexing technique and a dual distinguishable constellations, the eSI-CAP carries information bits by modulating symbols on the subbands of m-CAP. It also encodes additional information bits on the selection of the subband indices that is modulated with the dual constellation symbols. The performance advantage of eSI-CAP is demonstrated through theoretical analysis, computer simulations and VLC experimental validations. In addition, a novel maximum likelihood detector is developed for eSI-CAP with the same order of complexity as the conventional m-CAP detector. On comparison with m-CAP, eSI-CAP requires lower signal-to-noise ratio (SNR) per bit (γ b ) to reach a fixed data rate (R b ). Alternatively, when the γ b is fixed, it achieves a higher R b for a target BER. The results show that eSI-CAP is very attractive for VLC systems due to its flexible configuration and its improvement of the power efficiency of the conventional m-CAP modulation scheme. Index Terms-Multi-band carrierless amplitude and phase modulation (m-CAP), visible light communication (VLC), index modulation (IM), dual-mode constellation (DM).

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Experimental Comparison of PAM, CAP, and DMT Modulations in Phosphorescent White LED Transmission Link

Cited by 35 publications

References 19 publications

A Carrierless Amplitude Phase (CAP) Modulation Format: Perspective and Prospect in Optical Transmission System

A Carrierless Amplitude Phase (CAP) Modulation Format: Perspective and Prospect in Optical Transmission System

Neural Network-Based Joint Spatial and Temporal Equalization for MIMO-VLC System

Enhanced Subband Index Carrierless Amplitude and Phase Modulation in Visible Light Communications

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