An analog modulator for 460 MB/S visible light data transmission based on OOK-NRS modulation

Li, Honglei; Chen, Xiongbin; Guo, Junqing; Gao, Zongyu; Chen, Hongda

doi:10.1109/mwc.2015.7096287

Cited by 46 publications

(27 citation statements)

References 20 publications

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“…The first one [ Fig. 4(a)] consists in a MOSFET operating in linear mode and, therefore, acting as a current source controlled by the gate voltage [46]- [47]. Note that the notation used for describing the operating modes of the MOSFET is the one employed when the transistor is conceived as an amplifier.…”

Section: Modulation Schemes and Proposed Hb-led Driversmentioning

confidence: 99%

Reproducing Single-Carrier Digital Modulation Schemes for VLC by Controlling the First Switching Harmonic of the DC–DC Power Converter Output Voltage Ripple

Rodríguez

Lamar

Miaja

et al. 2018

IEEE Trans. Power Electron.

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Abstract-and Phase-Shift Keying (PSK). These modulation schemes achieve higher spectral efficiency (i.e., more data can be transmitted using the same bandwidth) than previously proposed modulation schemes performed by VLC transmitters based on the use of DC-DC power converters. To the author's knowledge, the ratio between the bit rate achieved and the switching frequency of the DC-DC power converter presented in this paper is the highest that can be found in literature.

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Section: Modulation Schemes and Proposed Hb-led Driversmentioning

confidence: 99%

Reproducing Single-Carrier Digital Modulation Schemes for VLC by Controlling the First Switching Harmonic of the DC–DC Power Converter Output Voltage Ripple

Rodríguez

Lamar

Miaja

et al. 2018

IEEE Trans. Power Electron.

View full text Add to dashboard Cite

show abstract

“…The next circuit is non-inverting summer amplifier to sum the input signal from LM358(5) with the LM358 (4). The transfer function of this circuit is shown in equation (5). The purpose of this summing is to clip an output signal on the linear region of the LED.…”

Section: B Dc-offset Adder Circuitmentioning

confidence: 99%

“…LED driver design is one of an interesting topic in the VLC application. Some research has been observed, such as reported by [4][5][6][7][8]. The Bias-tee (another name called as Bias-T) is the popular module that has been widely used as VLC's modulator due to offers the light-weight implementation also available on the market.…”

Section: Introductionmentioning

confidence: 99%

LED Driver Design for Indoor Lighting and Low- rate Data Transmission Purpose

Adiono¹

2017

EAI Endorsed Transactions on Energy Web

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Abstract-The LED driver design for lighting at the indoor environment, as well as data transmitter with a one-way link (for download purpose), is discussed clearly in this paper. The LED driver performances are already tested with three scenarios approach and it can work properly. Those approaches are 1) single carrier signal generated by signal generator with offset null as an input signal, 2) integrated with the digital block, i.e. Digital-to-Analog converter (DAC) board which has DC component as an input signal, and 3) using the audio signal as input. The contribution in this paper i.e. 1) the LED driver was simply designed and it could be used for signal with multilevel amplitude format (e.g. audio signals, video signals, OFDM signal format, etc.); 2) low-cost platform which is built from inexpensive general DIP OP-AMP, 3) can dial up 50 kHz of bandwidth; 4) no flicker effect, therefore harmless for human eyes; 5) light weight implementation and 6) simple to operate with manual tuning. Our proposed LED driver is divided into three stages where each of them, have the main functions, i.e. a) DC-offset remover circuit to remove signal input with has DC signal characteristic, DC-offset summer circuit with a variable amplifier as signal conditioning, and voltage follower transistor.

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“…Second, the radiation spectrum of white LEDs spans from 400 to 800 THz; thus high channel capacity could be achievable in accordance with the Shannon formula. At present, most researches on high speed VLC are confined to the indoor environment, mainly to improve the modulation bandwidth of LEDs, 4 develop improved modulation technology, 5 and design multiplexing scheme. 6 The highest data rate reported so far is the wave division multiplexing (WDM) VLC system, 7 where carrierless amplitude and phase modulation technology and adaptive equalization technology are jointly used to achieve a data rate of 4.5 Gbps in the laboratory.…”

Section: Introductionmentioning

confidence: 99%

Maximum likelihood estimation of vehicle position for outdoor image sensor-based visible light positioning system

Zhao

Lin

2016

Opt. Eng

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Abstract. Image sensor-based visible light positioning can be applied not only to indoor environments but also to outdoor environments. To determine the performance bounds of the positioning accuracy from the view of statistical optimization for an outdoor image sensor-based visible light positioning system, we analyze and derive the maximum likelihood estimation and corresponding Cramér-Rao lower bounds of vehicle position, under the condition that the observation values of the light-emitting diode (LED) imaging points are affected by white Gaussian noise. For typical parameters of an LED traffic light and in-vehicle camera image sensor, simulation results show that accurate estimates are available, with positioning error generally less than 0.1 m at a communication distance of 30 m between the LED array transmitter and the camera receiver. With the communication distance being constant, the positioning accuracy depends on the number of LEDs used, the focal length of the lens, the pixel size, and the frame rate of the camera receiver.

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An analog modulator for 460 MB/S visible light data transmission based on OOK-NRS modulation

Cited by 46 publications

References 20 publications

Reproducing Single-Carrier Digital Modulation Schemes for VLC by Controlling the First Switching Harmonic of the DC–DC Power Converter Output Voltage Ripple

Reproducing Single-Carrier Digital Modulation Schemes for VLC by Controlling the First Switching Harmonic of the DC–DC Power Converter Output Voltage Ripple

LED Driver Design for Indoor Lighting and Low- rate Data Transmission Purpose

Maximum likelihood estimation of vehicle position for outdoor image sensor-based visible light positioning system

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