166 Gbps data rate for underwater wireless optical transmission with single laser diode achieved with discrete multi-tone and post nonlinear equalization

Fei, Chao; Hong, Xiaojian; Zhang, Guowu; Du, Jianhe; Gong, Yu; Evans, Julian; He, Sailing

doi:10.1364/oe.26.034060

Cited by 51 publications

(20 citation statements)

References 27 publications

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“…In [9], a 16-quadrature amplitude modulation orthogonal frequency division multiplexing (QAM OFDM) UOWC system was experimentally demonstrated, achieving 14.8 Gbps over a 1.7-m seawater channel. In [10][11][12], Volterra series based nonlinear equalization in UOWC systems was studied, and the effectiveness and robustness of the Volterra nonlinear equalizer were validated under different water turbidities [10]. Hong et al probed probabilistic constellation shaping in a DMT-based UOWC system to approach the underwater channel capacity limit, and the net data rate was pushed to 18.09 Gbps over a 5-m water channel with a single LD [13,14].…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Performance Comparison of DFT-S DMT and QAM-DMT in UOWC System in Different Water Environments

Hong

Wang

et al. 2021

IEEE Photonics J.

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Section: Introductionmentioning

confidence: 99%

A Comprehensive Performance Comparison of DFT-S DMT and QAM-DMT in UOWC System in Different Water Environments

Hong

Wang

et al. 2021

IEEE Photonics J.

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“…For example, recent reports by Li et al showed the demonstration of 25 Gb/s by using a vertical-cavity surface-emitting laser (VCSEL) at 680 nm for 5 m [8]. Fei et al, using a blue laser diode, demonstrated 16.6 Gb/s for 5 m and 6.6 Gb/s over 55 m of clear tap water [9] while an RGB (Red Green Blue) laser was used by Kong et al to achieve 9.51 Gb/s for 10 m [10].…”

Section: Introductionmentioning

confidence: 99%

Gb/s Underwater Wireless Optical Communications Using Series-Connected GaN Micro-LED Arrays

Arvanitakis

Haas

et al. 2020

IEEE Photonics J.

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High speed wireless communications are highly desirable for many industrial and scientific underwater applications. Acoustic communications suffer from high latency and limited data rates, while Radio Frequency communications are severely limited by attenuation in seawater. Optical communications are a promising alternative, offering high transmission rates (up to Gb/s), while water has relatively low attenuation at visible wavelengths. Here we demonstrate the use of series-connected micro-light-emitting-diode (μLED) arrays consisting of 6 μLED pixels either 60 μm or 80 μm in diameter and operating at 450 nm. These devices increase the output power whilst maintaining relatively high modulation bandwidth. Using orthogonal frequency division multiplexing (OFDM) we demonstrate underwater wireless data transmission at rates of up to 4.92 Gb/s, 3.22 Gb/s and 3.4 Gb/s over 1.5 m, 3 m and 4.5 m, respectively, with corresponding bit error ratios (BERs) of 1.5 × 10 −3 , 1.1 × 10 −3 and 3.1 × 10 −3 , through clear tap water, and Mb/s rates through >5 attenuation lengths (ALs) in turbid waters.

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“…Therefore, the blue or green LDs or LEDs are more suitable for high-speed UVLC over moderate ranges. By using blue LD and post nonlinear equalization technique, 16.6 Gbit/s adaptive bit-power loading enabled DMT-based UVLC system over 5 m water link was achieved with the BER below 3.8 × 10 −3 [20]. Compared to LD, LED relaxes the requirement on collimation with PD.…”

Section: Introductionmentioning

confidence: 99%

“…It has high spectral efficiency (SE) with high QAM modulation formats and is robust against ISI and power fading. Recently, DMT-based UVLC has been extensively studied by means of offline approaches [20]- [23]. The DSP algorithms are realized with floating-point operations in computer software, which may not work as intended in actual implementation or even be unrealistic to implement in real hardware.…”

Section: Introductionmentioning

confidence: 99%

Demonstration of a 2.34 Gbit/s Real-Time Single Silicon-Substrate Blue LED-Based Underwater VLC System

et al. 2020

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We develop a real-time discrete multi-tone (DMT) transceiver based on field programmable gate array (FPGA) chips for a single chip silicon-substrate light-emitting diode (LED) based underwater visible light communication (UVLC). On-chip resource usages are analyzed and discussed. To improve bit error rate (BER) performance, a novel channel estimation technique utilizing hybrid inter-symbol frequency-averaging (Inter-SFA) and intrasymbol frequency-averaging (Intra-SFA) is proposed and investigated. The real-time DMT transceiver is experimentally verified in a silicon substrate blue LED-based UVLC system with a 1.2 m underwater link. By using the enhanced channel estimation, a gross bit rate of 2.34 Gbit/s real-time DMT signal over 1.2 m underwater transmission can be achieved with the BER of 3.5 × 10 −3. What's more, multiple-symbol interleaved Reed-Solomon (RS) codes are employed to further improve BER performance. The real-time measured post-FEC BER of the DMT-UVLC with multiple-symbol interleaved RS (255, 191) codes can be improved by more than six orders of magnitude. As a result, error-free (less than 1 × 10 −9) transmission is observed in our real-time experiment. Furthermore, 1.485 Gbit/s 720p high-definition video underwater transmission is successfully demonstrated. To the best of our knowledge, it is the first time to demonstrate a real-time LED-based UVLC system with DMT modulation beyond Gbit/s.

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166 Gbps data rate for underwater wireless optical transmission with single laser diode achieved with discrete multi-tone and post nonlinear equalization

Cited by 51 publications

References 27 publications

A Comprehensive Performance Comparison of DFT-S DMT and QAM-DMT in UOWC System in Different Water Environments

A Comprehensive Performance Comparison of DFT-S DMT and QAM-DMT in UOWC System in Different Water Environments

Gb/s Underwater Wireless Optical Communications Using Series-Connected GaN Micro-LED Arrays

Demonstration of a 2.34 Gbit/s Real-Time Single Silicon-Substrate Blue LED-Based Underwater VLC System

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