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Hardware Implementation of Li-Fi System

Sadeghi, Maryam | 2023

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 56138 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Shabani, Mahdi; Kavehvash, Zahra
  7. Abstract:
  8. Today, the “wireless” is used almost synonymously with radio-frequency (RF) technologies as a result of the wide-scale deployment and utilization of wireless RF devices and systems. The RF band ranges from 300 kHz to 300 GHz and its use is regulated by regional and international agencies. With the ever-growing popularity of data-heavy wireless communications, wireless products and services, the demand for RF spectrum is outstripping supply, which causes the spectrum congestion. Therefore, the time has come to seriously consider other viable options for wireless communication using the upper parts of the electromagnetic spectrum. In this way, the optical band which includes infrared, visible, and ultraviolet band is considered. Compared to RF band, the optical wireless communication (OWC) has characteristics such as extremely wide bandwidth, resistance to electromagnetic interference, high level of security, and low cost. Numerous applications, such as wireless local area networks, wireless vehicle communication, point-to-point terrestrial or space communication, are possible application of this system. The main idea of Li-Fi is to take advantage of available LEDs bulbs for lighting purposes. LEDs can be modulated without significantly affecting brightness and human eyes. The purpose of this paper is to design an optical transceiver for Li-Fi systems with the highest possible data transmission rate, low power consumption, and low-cost implementation. This design has considered a wide variety of blocks with very low signal-to-noise ratios. This justifies the complexity (both in terms of computation and resources) of the presented method. The proposed structure has been implemented on FPGA Kintex7 and the results are presented
  9. Keywords:
  10. Wireless Optical Communication ; Light Fidelity (Li-Fi) ; Field Programmable Gate Array (FPGA) ; Optical Transceiver ; Hardware Implementation ; Kintex7 Field Programmable Gate Array (FPGA)

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