Accelerating Yield Mapping at Low Data Rates Using Compressive Field Estimate

With the widespread effective usage of LEDs the visible light communication (VLC) system has brought out an increasing interest in the field of wireless communication recently. VLC is envisioned to be an appealing substitute to RF systems because of the advantages of LEDs such as high communication security, rich spectrum, etc. For achieving bearable inter symbol interference (ISI) and high data rates, OFDM can be employed in VLC. In this paper, the performance of VLC system with popular unipolar versions of OFDM viz. Flip-OFDM and ACO-OFDM is analyzed in fading channels. From the simulation results it is seen that the Flip-OFDM-VLC system outperforms the ACO-OFDM-VLC system in terms of bit error rate and is well suited for future 5G applications.

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Entropy and Minimal Data Rates for State Estimation and Model Detection

Proceedings of the 19th International Conference on Hybrid Systems: Computation and Control - HSCC '16 ◽

10.1145/2883817.2883820 ◽

2016 ◽

Cited By ~ 11

Author(s):

Daniel Liberzon ◽

Sayan Mitra

Keyword(s):

State Estimation ◽

Data Rates ◽

Minimal Data

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Deep-learning-based high-resolution recognition of fractional-spatial-mode-encoded data for free-space optical communications

Scientific Reports ◽

10.1038/s41598-021-82239-8 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Youngbin Na ◽

Do-Kyeong Ko

Keyword(s):

Deep Learning ◽

Communication Systems ◽

Degrees Of Freedom ◽

Image Transmission ◽

Data Traffic ◽

Free Space Optical ◽

Learning Classifier ◽

Communication Capacity ◽

Data Rates ◽

Mode Space

AbstractStructured light with spatial degrees of freedom (DoF) is considered a potential solution to address the unprecedented demand for data traffic, but there is a limit to effectively improving the communication capacity by its integer quantization. We propose a data transmission system using fractional mode encoding and deep-learning decoding. Spatial modes of Bessel-Gaussian beams separated by fractional intervals are employed to represent 8-bit symbols. Data encoded by switching phase holograms is efficiently decoded by a deep-learning classifier that only requires the intensity profile of transmitted modes. Our results show that the trained model can simultaneously recognize two independent DoF without any mode sorter and precisely detect small differences between fractional modes. Moreover, the proposed scheme successfully achieves image transmission despite its densely packed mode space. This research will present a new approach to realizing higher data rates for advanced optical communication systems.

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Peta-bit-per-second optical communications system using a standard cladding diameter 15-mode fiber

Nature Communications ◽

10.1038/s41467-021-24409-w ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Georg Rademacher ◽

Benjamin J. Puttnam ◽

Ruben S. Luís ◽

Tobias A. Eriksson ◽

Nicolas K. Fontaine ◽

...

Keyword(s):

Wavelength Division Multiplexing ◽

Single Mode ◽

Single Mode Fiber ◽

Capacity Limits ◽

Wavelength Division ◽

Core Networks ◽

Space Division Multiplexing ◽

Space Division ◽

Data Rates ◽

Multi Mode

AbstractData rates in optical fiber networks have increased exponentially over the past decades and core-networks are expected to operate in the peta-bit-per-second regime by 2030. As current single-mode fiber-based transmission systems are reaching their capacity limits, space-division multiplexing has been investigated as a means to increase the per-fiber capacity. Of all space-division multiplexing fibers proposed to date, multi-mode fibers have the highest spatial channel density, as signals traveling in orthogonal fiber modes share the same fiber-core. By combining a high mode-count multi-mode fiber with wideband wavelength-division multiplexing, we report a peta-bit-per-second class transmission demonstration in multi-mode fibers. This was enabled by combining three key technologies: a wideband optical comb-based transmitter to generate highly spectral efficient 64-quadrature-amplitude modulated signals between 1528 nm and 1610 nm wavelength, a broadband mode-multiplexer, based on multi-plane light conversion, and a 15-mode multi-mode fiber with optimized transmission characteristics for wideband operation.

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Design of Improper Constellations for Optimal Data Rates in Downlink NOMA Systems

2020 International Conference on Wireless Communications and Signal Processing (WCSP) ◽

10.1109/wcsp49889.2020.9299874 ◽

2020 ◽

Author(s):

Hao Cheng ◽

Yili Xia ◽

Zhaohua Lu ◽

Yongming Huang ◽

Wenjiang Pei ◽

...

Keyword(s):

Data Rates

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The Engagement of Hybrid Ultra High Space Division Multiplexing with Maximum Time Division Multiplexing Techniques for High-Speed Single-Mode Fiber Cable Systems

Journal of Optical Communications ◽

10.1515/joc-2019-0205 ◽

2019 ◽

Vol 0 (0) ◽

Author(s):

I. S. Amiri ◽

P. G. Kuppusamy ◽

Ahmed Nabih Zaki Rashed ◽

P. Jayarajan ◽

M. R. Thiyagupriyadharsan ◽

...

Keyword(s):

Communication Systems ◽

High Speed ◽

Single Mode ◽

Single Mode Fiber ◽

Design Parameters ◽

Control Parameters ◽

Data Rates ◽

Fiber Optic Communication ◽

High Space ◽

Optic Communication

AbstractHigh-speed single-mode fiber-optic communication systems have been presented based on various hybrid multiplexing schemes. Refractive index step and silica-doped germanium percentage parameters are also preserved during their technological boundaries of attention. It is noticed that the connect design parameters suffer more nonlinearity with the number of connects. Two different propagation techniques have been used to investigate the transmitted data rates as a criterion to enhance system performance. The first technique is soliton propagation, where the control parameters lead to equilibrium between the pulse spreading due to dispersion and the pulse shrinking because of nonlinearity. The second technique is the MTDM technique where the parameters are adjusted to lead to minimum dispersion. Two cases are investigated: no dispersion cancellation and dispersion cancellation. The investigations are conducted over an enormous range of the set of control parameters. Thermal effects are considered through three basic quantities, namely the transmission data rates, the dispersion characteristics, and the spectral losses.

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Fast speed switching response and high modulation signal processing bandwidth through LiNbO3 electro-optic modulators

Journal of Optical Communications ◽

10.1515/joc-2020-0012 ◽

2020 ◽

Vol 0 (0) ◽

Author(s):

Mahmoud M. A. Eid ◽

Ahmed Nabih Zaki Rashed ◽

Iraj S. Amiri

Keyword(s):

Near Infrared ◽

Infrared Region ◽

Modulation Bandwidth ◽

Fast Speed ◽

Electrooptic Modulators ◽

High Modulation ◽

Data Rates ◽

Electro Optic ◽

Modulation Signal ◽

Speed Response

AbstractThis work outlined the fast speed response and high modulation bandwidth through LiNbO3 electro-optic modulators. The refractive index is analyzed to estimate the switching voltage and modulation bandwidth for these modulators. The modulation voltage and data transmission data rates are analyzed and discussed clearly through LiNbO3 electro-optic modulators. The modulator’s performance efficiency is upgraded with the optimum modulator length of 10 mm and its thickness of 2 mm. The proposed modulators are compared with GaAs electrooptic modulators under various electro-optic modulators dimensions at 1300 nm near-infrared region and room temperature.

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