Determination of Electrical and Optical Design Parameters of High-Efficiency OLED

Atik, İpek; Farsakoğlu, Ömer Faruk; Watsuji, Nurdal; Yılmaz, Şaban

doi:10.17148/ijarcce.2016.55233

Cited by 2 publications

(1 citation statement)

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“…Different from LCDs, OLEDs are based on organic layers between two electrodes [73]. In response to external voltages, the OLED panel can emit light itself without a backlight module [74]. Compared to LCDs, OLEDs enjoy advantages such as larger viewing angle (over 80 degrees from the normal), better contrast ratio and faster response time [75].…”

Section: Transmitter Selectionmentioning

confidence: 99%

A Fixed-Scale Pixelated MIMO Visible Light Communication System

Han

Hranilovic

2018

IEEE J. Select. Areas Commun.

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Visible light communication (VLC) systems take advantage of ubiquitous light-emitting diodes (LED) and leverage existing illumination infrastructure to provide broadband optical communication links. Multiple-input multiple-output (MIMO) VLC systems are among the well-studied topics in VLC research. However, most traditional MIMO VLC systems require accurate alignment and have to adjust to different magnifications at various link distances. Consequently, the alignment and calibration modules increase the complexity of the receiver structures.A pixelated MIMO VLC system is introduced in this thesis, which transmits a series of time-varying coded images that can be received and decoded by commercial digital cameras. Using a convex lens placed in front of the transmitter at its focal length, the system exploits the Bokeh effect to obtain fixed-scale images at all link distances.Compared with traditional pixelated MIMO VLC systems, which send information directly in space, this spatial-angular mapping system sends information in different angles instead. In contrast to the complex receiver structures in traditional setups, the proposed system can capture fixed-scale images with a simple receiver requiring no re-focusing as the camera moves. iv The channel model of the system is measured and modeled and a rateless code is applied to track the truncation of receive images for various link ranges and angular offsets. A proof-of-concept optical communication system is implemented with an LCD display and a high speed CMOS camera. Performance of the system is measured and analysed. The experimental system can achieve a throughput of approximately 10 bit per frame over 90 cm. This fixed-scale pixelated MIMO wireless optical communication system provides a less expensive option for short-range indoor broadcasting optical links and intervehicle communications due to its mobility, stability and simpler receiver structure compared to traditional designs in different working conditions. v I would also like to give my warmest thanks to all my colleagues in the research group, especially Mr. Min Lu, who helped me set up the experimental system. Mr.George Su also provided me with a lot of advices on the coding part. Mr. Warren Pawlikowski shared his experience in the hardware area and he has always been a reliable helping hand when I encountered any hardware problem. It is indeed a great honour to work in a group with such diversity and talents.Lastly, I would like to thank my parents for all their love in all these years. They are always my strongest support no matter where I am and how well I am doing.

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Section: Transmitter Selectionmentioning

confidence: 99%