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Automatic beams detection used for LiFi car-2-car communication

Spahiu Cosmin Stoica, Marian Abagiu, Stanescu Liana

Annals of Computer Science and Information Systems

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2020

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Vol. 21

431--434

EN

he car-2-car communication it is a must for the next generation of cars. Such a functionality will increase the road safety by enhancing drivers awareness about road conditions and eventual obstacles. It can be also used to inform the cars behind about risky situations in order to trigger early avoidance actions (e.g. breaking). The available technologies were analyzed in order to define the best solution that should be accepted by most car manufacturers. A consortium took the responsibility to define a standard in this domain. The current paper analyze the feasibility of using a system based on LiFi technology, from image processing point of view for automatic beams detection. The paper consider the solution of using the beams of the car are used as a sender of information and an onboard camera running a special software is used as a receiver. This solution has the advantage of using already available hardware with small adaption, and only integrate the software.

2

Studying fibre-optic link used to transmission an analogue signals

Białek R., Wiśnios M., Kuchta M., Jadczak K.

Przegląd Elektrotechniczny

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2018

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R. 94, nr 12

266--269

EN

Fibre-optic transmission, compared to other transmission media, such as coaxial cables or microwave waveguides, has numerous advantages, i.a.: minor attenuation or the ability to transmit broadband signals. The paper discusses the results of studying a broadband transmission system, which utilizes a fibre-optic link. The measurements of frequency and transfer characteristics were taken. Furthermore, the response of the system to a pulse signal was recorded.

PL

Transmisja światłowodowa w porównaniu do innych mediów transmisyjnych, takich jak kable koncentryczne czy falowody mikrofalowe posiada wiele zalet, m.in.: niewielkie tłumienie czy możliwość przesyłania sygnałów o szerokim paśmie. W pracy przedstawiono wyniki badań szerokopasmowego systemu transmisji wykorzystującego łącze światłowodowe. Przeprowadzono pomiary charakterystyki częstotliwościowej oraz przetwarzania. Ponadto została zarejestrowana odpowiedź układu na sygnał impulsowy.

3

Synthesis method for distributed amplifiers

Zólomy A.

Journal of Telecommunications and Information Technology

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2003

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nr 1

20-23

EN

New design method is presented for distributed amplifiers (DA). It is shown that by proper design of the applied transmission lines (TL) between the active devices the image impedance and the cut-off frequency (COF) of the input or output line of the DA can be independently tuned. As a consequence, the phase mismatch between the lines of the DA can be adjusted independently from the termination conditions and from the capacitances of the applied transistor and thus flat gain characteristic can be achieved. The method is well applicable for nearly unilateral devices like HBTs [1] and yields the highest gain-bandwidth product.