Maintaining a free-space-optical communication link between two autonomous mobiles

Khan, Mahmudur; Yüksel, Murat

doi:10.1109/wcnc.2014.6953020

Cited by 20 publications

(3 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the area of communication, Free-Space Optical Communications (FSOC) [23] is being considered as an alternative for military network-centric operations. Particularly related is the work in [24] where the problem of two mobile nodes that try to maintain LoS alignment is studied.…”

Section: Related Workmentioning

confidence: 99%

Optimal Placement and Patrolling of Autonomous Vehicles in Visibility-Based Robot Networks

Rahman,

Abodo,

Bobadilla

et al. 2017

Preprint

View full text Add to dashboard Cite

In communication-denied or contested environments, Line-of-Sight (LoS) communication (e.g free space optical communication using infrared or visible light) becomes one of the most reliable and efficient ways to send information between geographically scattered mobile units. In this paper, we consider the problem of planning optimal locations and trajectories for a group of autonomous vehicles to see a set of units that are dispersed in an environment with obstacles. The contributions of the paper are the following: 1) We propose centralized and distributed algorithms to verify that the vehicles and units form a connected network through LoS; 2) We present an algorithm that can maintain visibility-based connectivity, if possible, by relocating a single vehicle; and 3) We study the computational complexity of calculating the optimal positioning of multiple vehicles and propose an approximate geometric procedure to restore visibility-based connected network. Our ideas are implemented and tested through realistic computer simulations and outdoor physical experiments.

show abstract

Section: Related Workmentioning

confidence: 99%

Optimal Placement and Patrolling of Autonomous Vehicles in Visibility-Based Robot Networks

Rahman,

Abodo,

Bobadilla

et al. 2017

Preprint

View full text Add to dashboard Cite

show abstract

“…Information explosion brought by the rapid development of big data technology has put forward the urgent demand for high-speed information interaction. Free space optical communication (FSO) with high data rate, good data security and broad-spectrum range thus has drawn significant attention. − For FSO between multiple or moving targets, the signal needs to be received within large angles, which is traditionally achieved using the gimbals or fast-moving mirrors. − These devices are either bulky or suffer from small field of views (FOV), which hinders commercial applications in smart mobile terminals, such as mobile phones, unmanned aerial vehicles (UAVs), intelligent robots, telemedicine, etc. Moreover, their mechanisms are much like the reverse function of the beam steering devices, and an extra lens is needed for coupling to modulate/demodulate signals.…”

Section: Introductionmentioning

confidence: 99%

High-Speed Duplex Free Space Optical Communication System Assisted by a Wide-Field-of-View Metalens

Guo

Tian

et al. 2023

ACS Photonics

View full text Add to dashboard Cite

Free space optical communication (FSO) has gained significant attention due to the growing demand for a high information capacity. For FSO between multiple or moving targets, a receiver with a wide angle of acquisition capability is necessary. Traditionally, gimbals and fast steering mirrors have been used, but they are often difficult to make both compact and wide-angle. Here, a novel duplex FSO system is demonstrated, which utilizes a highly compact fiber coupling metalens to receive and transmit signals in a large field of view up to 80°. High coupling efficiency up to 48.8% at a wavelength of 1550 nm is experimentally achieved. The small coupling loss enables the user to modulate and direct the downstream power from the base station back along the same path, saving energy and leaving only one source in the FSO system. The low bit error rate and the open and clear eye diagram results validate the excellent downlink/ uplink communication performance of a 10 Gbps FSO system empowered by the metalens. The system exhibits a large field of view, high data rate, compact size, and low power consumption, which meets the size, weight, and power requirement of smart devices.

show abstract

“…In the area of communication, Free-Space Optical Communications (FSOC) [JDH + 06] is being considered as an alternative for military network-centric operations. Particularly related is the work in[KY14] where the problem of two mobile nodes that try to maintain LoS alignment is studied.…”

mentioning

confidence: 99%

Efficient Mission Planning for Robot Networks in Communication Constrained Environments

Rahman¹

View full text Add to dashboard Cite

The research works presented in this dissertation came into a success because of many people who helped me in many ways. First of all, I would like to thank my adviser Dr Leonardo Bobadilla who paved the way for completing the research in time through his continuous support and great advice. He made robotics very interesting to me and we had many fruitful hours of discussions on research topics while eating in restaurants, attending conferences, walking around and riding in car.

show abstract

Maintaining a free-space-optical communication link between two autonomous mobiles

Cited by 20 publications

References 16 publications

Optimal Placement and Patrolling of Autonomous Vehicles in Visibility-Based Robot Networks

Optimal Placement and Patrolling of Autonomous Vehicles in Visibility-Based Robot Networks

High-Speed Duplex Free Space Optical Communication System Assisted by a Wide-Field-of-View Metalens

Efficient Mission Planning for Robot Networks in Communication Constrained Environments

Contact Info

Product

Resources

About