In this paper, we propose a differential on-off keying (DOOK) technique for free space optical (FSO) communications. Intensity fluctuation caused by atmospheric turbulence is the key factor in intensity modulation and direct detection (IM/DD) systems. Based on quasi-stationary characteristics of atmospheric channel, we used difference of sequential symbols for DOOK detection. The proposed technique is implemented through decision process to compare difference of sequential symbols with the certain threshold. Information of channel model and noise power is used for estimating the optimum fixed threshold in order to obtain optimal bit error rate (BER) performance. The transmission simulation is conducted according to various channel and the result shows the proposed technique is robust for FSO channel.
|Title of host publication||21st International Conference on Transparent Optical Networks, ICTON 2019|
|Publisher||IEEE Computer Society|
|Publication status||Published - 2019 Jul|
|Event||21st International Conference on Transparent Optical Networks, ICTON 2019 - Angers, France|
Duration: 2019 Jul 9 → 2019 Jul 13
|Name||International Conference on Transparent Optical Networks|
|Conference||21st International Conference on Transparent Optical Networks, ICTON 2019|
|Period||19/7/9 → 19/7/13|
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP; Ministry of Science, ICT & Future Planning) [No.2017M1A3A3A02016524]
© 2019 IEEE.
All Science Journal Classification (ASJC) codes
- Computer Networks and Communications
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials