4.0 Gbps visible light communication in a foggy environment based on a blue laser diode

Qiu, Pengjiang; Cui, Ganggang; Qian, Zhenyu; Zhu, Shijie; Shan, Xinyi; Zhao, Zhuoqun; Zhou, Xiaoli; Cui, Xugao; Tian, Pengfei

doi:10.1364/oe.427153

Cited by 20 publications

(3 citation statements)

References 26 publications

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“…In this work, 16-QAM-OFDM modulation was utilized considering the signal-to-noise ratio (SNR) of the proposed system, and the relevant parameters of OFDM signal are set as follows: the subcarrier number is 512 and the symbol length is 2048, and two 1/16 symbol lengths are set as the cyclic prefix (CP) and the pilot sequence, respectively. The OFDM schematic diagram and calculation method of data rate can refer to our previous work [16]. BERs versus data rate of the UWOC system with various parallel micro-LEDs were obtained as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Micro-LED Based Double-Sided Emission Display and Cross-Medium Communication

et al. 2022

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GaN micro-LEDs have been spotlighted as promising candidates for high-speed optical communication, which may become important components in 6G communication blueprint. To achieve a superior network covering sea, land and air for 6G communication, we demonstrated cross-medium communication based on an 80 µm double-sided emission micro-LED array. The high enough light output power radiated from both sides of the green micro-LED enabled interference-free signal transmission in different media. Data rates of 1.55 Gbps over the 3 m freespace link and 1.11 Gbps over the 3.4 m underwater link could be achieved simultaneously. Furthermore, parallel-connected micro-LEDs were utilized to demonstrate the feasibility of pattern display and communication, and expected to achieve longer communication distances in media such as underwater channels.

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Section: Resultsmentioning

confidence: 99%

Micro-LED Based Double-Sided Emission Display and Cross-Medium Communication

et al. 2022

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“…These optoelectronic devices are commonly applied in optical communication, such as fiber communication, and each has advantages and disadvantages. Using an LD as the transmitter can easily realize high-speed communication beyond Gbps [6], [7]. However, high cost and harsh operating conditions limit the development of the LD-VLC scheme.…”

Section: Introductionmentioning

confidence: 99%

Physical-Layer Network Coding Enhanced Visible Light Communications Using RGB LEDs

Xiong

Zhang

et al. 2023

IEEE Photonics J.

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Compared with traditional radio frequency (RF)based techniques, the advantages of wider bandwidth, higher security, and stronger electromagnetic immunity (EMI) capability make visible light communications (VLC) a good candidate technology for the 6th generation (6G) wireless communications. Red, green, and blue (RGB) light-emitting diodes (LEDs) based VLC has become an important research branch due to its low price and high reliability. However, the saturation of photodiode (PD) caused by the ambient background light may seriously degrade the bit error rate (BER) performance of an RGB-VLC system's three spatially uncoupled information streams (i.e., red, green, and blue LEDs can transmit different data packets simultaneously) in practical applications. To mitigate the ambient light interference in point-to-point RGB-VLC systems, we propose, PNC-VLC, a network-coded scheme that uses two LEDs with the same color at the transmitter to transmit two different data streams and we make use of the naturally overlapped signals at the receiver to formulate physical-layer network coding (PNC). The adaptivity of PNC-VLC could effectively improve the BER degradation problem caused by the saturation of PD under the influence of ambient light. We conducted simulations based on the parameters of commercial off-the-shelf (COTS) products to prove the superiority of the PNC-VLC under the influence of four typical illuminants. Simulation results show that the PNC-VLC system can maintain a better and more stable system BER performance under different ambient background light conditions. Remarkably, with 2/3 throughput efficiency, PNC-VLC can bring 133.3% gain to the BER performance when compared with the traditional RGB-VLC systems under the Illuminant A interference model, making it a good option for VLC with unpredictable ambient background interferences.

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“…Visible light communication (VLC) usually uses lightemitting diode (LED) and laser diodes [1][2][3][4][5][6][7] as light sources. Compared with laser diodes, LED have greater modulation bandwidth and higher response sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Layout and optimization of LED light source for indoor visible light communication

Pei

Jing

Tong

et al. 2022

Micro & Optical Tech Letters

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This paper proposes a novel polygonal layout based on rectangular plane stereo space. The illumination and signal-to-noise ratio of polygonal layout and circular layout is simulated in a 5 m × 4 m × 3 m room; The simulation results show that: compared with the illuminance uniformity of the circular layout of 0.67, the illuminance uniformity of the polygonal layout reaches 0.81, which is improved by 20.90%. The position and power of the polygonal layout are further optimized respectively by particle swarm optimization (PSO), and the illuminance uniformity and signal-to-noise ratio quality factors (Q) of the polygonal layout can be increased from 0.81 and 19.31 to 0.88 and 37.38 after optimization, respectively. The illuminance uniformity increased by 8.64%, and the Q increased by 93.58%. The experimental system of polygonal layout optimized by PSO is built, by comparing the simulation and experimental results, the average illuminance error of the simulation and experiment is 10.58%, the illuminance uniformity error is 5.68%, and the illuminance distribution trend is consistent.

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4.0 Gbps visible light communication in a foggy environment based on a blue laser diode

Cited by 20 publications

References 26 publications

Micro-LED Based Double-Sided Emission Display and Cross-Medium Communication

Micro-LED Based Double-Sided Emission Display and Cross-Medium Communication

Physical-Layer Network Coding Enhanced Visible Light Communications Using RGB LEDs

Layout and optimization of LED light source for indoor visible light communication

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