A Gbps Building-to-Building VLC Link Using Standard CMOS Avalanche Photodiodes

Fahs, Bassem; Romanowicz, Matthew; Hella, Mona M.

doi:10.1109/jphot.2017.2765499

Cited by 21 publications

(11 citation statements)

References 28 publications

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“…In [29] an OWC experiment in indoor settings up to 1.5 m at data rates up to 3 Gbit/s were reported and in outdoor setting up to 72 m at data rates up to 2 Gbit/s [30]. The work in [30] used an APD also in a standard 0.35 μm CMOS process but it was not fully integrated with TIA circuit. Instead, a low-noise amplifier (LNA) was ac-coupled to a wire bonded APD fabricated in CMOS.…”

Section: Maximum Error-free Transmission Distancementioning

confidence: 99%

VLC Using 800-μm Diameter APD Receiver Integrated in Standard 0.35-μm BiCMOS Technology

et al. 2021

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The fully integrated 800 μm. diameter avalanche photodiode optical receiver is implemented in 0.35 μm BiCMOS technology without any process modifications. The integrated receiver reaches sensitivities of-33 dBm at 1 Gbit/s and-29.3 dBm at 2 Gbit/s. The reached sensitivities are well within the state-of-the-art of integrated avalanche photodiode receivers and can even be compared to a hybrid avalanche photodiode receiver comprised of high-performing commercial components. The performance of the designed receiver was verified in visible light communication experiments. The receiver could reach up to 16.5 m at 2 Gbit/s and 27 m at 1 Gbit/s of error free transmission distance using a 675-nm point laser source as transmitter. The common indoor illuminance levels up to 500 lux could be tolerated when pointed directly towards the receiver. High sensitivity and high speed make this integrated receiver suitable for future optical wireless communication systems, where due to its integrated nature the manufacturing cost can be lowered, and at the same time the design is compact in size and easy to assemble and scale. Furthermore, no optics is used in front of the receiver due to its large area resulting in a wide field of view.

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Section: Maximum Error-free Transmission Distancementioning

confidence: 99%

VLC Using 800-μm Diameter APD Receiver Integrated in Standard 0.35-μm BiCMOS Technology

et al. 2021

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“…This will avoid the needles complexity in case of low number of users. Nowadays, the cost of detectors used in ADR units has been much reduced either for the p-i-n photodiodes [48] or for the CMOS avalanche ones [49]. Since the p-i-n photodiodes have the simplest and the lowest rugged structure, it has been widely used to construct the ADR units [22], [24], [25], [50].…”

Section: A Problem Assumptions and Extensionsmentioning

confidence: 99%

Optimal Resource Allocation and Interference Management for Multi-User Uplink Light Communication Systems With Angular Diversity Technology

et al. 2020

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Light communication (LC) technology has been regarded as a promising candidate for future indoor wireless networks by providing safe, power-efficient, and high data rate communications needed for tomorrow's applications. Both visible light (VL) and infrared (IR) wavelengths can be utilized to design LC systems. It is often proposed that VL can be used to offload downlink traffic while near-IR is typically used in the uplink. In this paper, the uplink multiuser LC system is considered where the system performance is degraded by both inter-symbol interference (ISI) resulting from multipath reflections and inter-user interference (IUI) coming from neighboring users. To mitigate these limitations, an optimal fair resource allocation (OFRA) scheme is proposed which aims to improve the fairness among the users in terms of their received signal to interference plus noise ratios (SINRs) by implementing the angle diversity technology. Precisely, by assigning an ON/OFF state for each LED of the angle diversity transmitter (ADT), used by each user, the IUI can be significantly reduced. Also, the angle diversity receiver (ADR) is used to effectively mitigate the effects of ISI. The allocation matrix which achieves the highest fairness between different users is obtained for different scenarios of user distribution. Toward this, the exhaustive search (ES) method is used to obtain the optimal solution for the optimization problem under consideration. However, to reduce the time complexity of ES method, a quasi-optimal solution called sub-optimal fair resource allocation scheme SFRA is proposed. The sub-optimal solution is based on the genetic algorithm (GA) scheme. The simulation results reveal that both the OFRA and SFRA achieve almost the same performance. Moreover, the simulation results indicate the superior performance of the proposed OFRA scheme over the conventional single transmitter (ST) one.

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“…We drive the laser using the UART communication protocol, which is a simple OOK modulation common with microcontrollers, at a modest baud rate of 115.2kbps as speed is not our concern in this paper. However, OWC literature show Gbps data rates [28], [29]. The trust beacon is a Thorlabs PIN PD (part no.…”

Section: A Hardware and Setupmentioning

confidence: 99%

Direct and Transitive 3D Localization Using a Zone-Based Positioning Service

Lam

Little

2020

IEEE Access

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We propose a novel indoor optical positioning technique called zone-based positioning. The approach enables coordinate prediction of a mobile user device with the assistance of trusted optical anchor points, angle diversity, and optical wireless communications. Then, by a process called transitive positioning, additional targets within the field-of-view of the device can also be positioned once the user device is localized. Through modeling and analysis, the predicted performance of the approach reaches less than 5cm mean square error for direct 3D positioning with insignificant degradations for iterative transitive positioning. Experimental validations of the models using a prototype zone positioning unit demonstrate the potential for the approach including opportunities for additional accuracy refinement. INDEX TERMS Light-based positioning, optical wireless communications, 3D localization, zone-based positioning, transitive positioning.

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A Gbps Building-to-Building VLC Link Using Standard CMOS Avalanche Photodiodes

Cited by 21 publications

References 28 publications

VLC Using 800-μm Diameter APD Receiver Integrated in Standard 0.35-μm BiCMOS Technology

VLC Using 800-μm Diameter APD Receiver Integrated in Standard 0.35-μm BiCMOS Technology

Optimal Resource Allocation and Interference Management for Multi-User Uplink Light Communication Systems With Angular Diversity Technology

Direct and Transitive 3D Localization Using a Zone-Based Positioning Service

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