| Title | Performance Analysis and Enhancement of Free Space Optical Links for Developing State-Of-The Art Smart City Framework |
|---|---|
| ID_Doc | 39436 |
| Authors | Chauhan, S; Miglani, R; Kansal, L; Gaba, GS; Masud, M |
| Title | Performance Analysis and Enhancement of Free Space Optical Links for Developing State-Of-The Art Smart City Framework |
| Year | 2020 |
| Published | Photonics, 7, 4 |
| Abstract | In this paper, we have investigated and reported the performance of free-space optical (FSO) links operating in adverse atmospheric conditions. Since FSO links share operational similarity with fiber communication; hence, we believe that a cost-effective FSO framework can play a significant role in the transparent integration of high-speed network access backbones with the end-users. Different modulation formats, complemented with spatial diversity techniques, are discussed in this paper to strategize performance optimization of FSO links. Using bit error rate (BER) and signal-to-noise ratio (SNR) as performance metrics, it was found that binary phase-shift keying (BPSK) qualifies as the best technique modulation technique delivering SNR gain of 10 dB over on-off keying (OOK) operating link under similar channel conditions. Further performance optimization was achieved using space diversity reception wherein SNR witnessed a gain of 3 dB gain over the single-channel FSO link. In terms of application, the proposed model can help in developing a citizen-centric smart city ecosystem that can support seamless communication between heterogeneous smart devices. |
| https://www.mdpi.com/2304-6732/7/4/132/pdf |
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