| 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 |
| DOI |
10.3390/photonics7040132 |
| 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. |
| Author Keywords |
free-space optics (FSO); smart cities; last-mile connectivity; local area network (LAN); gamma-gamma channel model; space diversity reception technique (SDRT); selection combining (SC) |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000602197100001 |
| WoS Category |
Optics |
| Research Area |
Optics |
| PDF |
https://www.mdpi.com/2304-6732/7/4/132/pdf
|