Experimental Results of 100m Indoor and Outdoor FSO Testbed Employing 64-QAM OFDM 


Vol. 47,  No. 2, pp. 311-318, Feb.  2022
10.7840/kics.2022.47.2.311


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  Abstract

Unlike the RF communication, the free space optical (FSO) communication has remarkable advantages, which are no frequency license issues, low-cost and high power efficiency. Even though there are various researches on the FSO sytems abroad, no experimental demonstrations have been conducted in South Korea. In this work, we implement a FSO experiment and analyze the performance of our FSO testbed employing 64-QAM OFDM over 100m indoor and outdoor environments. In our FSO testbed, two USRPs are used for RF signal generation and reconstruction. The RF signal is converted into 1550nm laser signal by an optical intensity modulator and changed into RF signal again by a photodetector. We measure EVM and BER of the received signals in 1) indoor corridor and 2) outdoor environment. As a result, our FSO testbed shows BER below 10e-5. This testbed, which firstly succeeded 100m FSO transmission for indoor and outdoor conditions in Korea, validates he FSO system is a promising alternative for backhaul link connecting in-between the wireless local area network (WLAN)-based conventional network infrastructure.

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  Cite this article

[IEEE Style]

J. Kim, J. Lee, Y. Ko, "Experimental Results of 100m Indoor and Outdoor FSO Testbed Employing 64-QAM OFDM," The Journal of Korean Institute of Communications and Information Sciences, vol. 47, no. 2, pp. 311-318, 2022. DOI: 10.7840/kics.2022.47.2.311.

[ACM Style]

Jong-Min Kim, Ju-Hyung Lee, and Young-Chai Ko. 2022. Experimental Results of 100m Indoor and Outdoor FSO Testbed Employing 64-QAM OFDM. The Journal of Korean Institute of Communications and Information Sciences, 47, 2, (2022), 311-318. DOI: 10.7840/kics.2022.47.2.311.

[KICS Style]

Jong-Min Kim, Ju-Hyung Lee, Young-Chai Ko, "Experimental Results of 100m Indoor and Outdoor FSO Testbed Employing 64-QAM OFDM," The Journal of Korean Institute of Communications and Information Sciences, vol. 47, no. 2, pp. 311-318, 2. 2022. (https://doi.org/10.7840/kics.2022.47.2.311)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880