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HARMEET KAUR1, RAJANDEEP SINGH1,* , RAMANDEEP KAUR2
In this paper 2×2 multiple input multiple output (MIMO) and 4×4 MIMO architectures for the FSO link have been presented and compared with conventional FSO link. The performance has been analysed in terms of the Q-factor and BER. The parameter values and environmental conditions are kept the same for all system configurations. The key objective of this work is to use MIMO technology to improve the system performance in free-space optical communication (FSO). MIMO takes advantage of the receiver’s spatial diversity by receiving several independent copies of the same signal at the receiver. In this work, the particular focus is on designing suitable MIMO FSO systems and analyzing the performance of the free space optic system. Only 4×4 MIMO configurations yield acceptable Q-factors (>6) and BER(<10-9 ) up to the 670 m range. Whereas the 2×2 MIMO system is capable of providing acceptable BER and Q-factor up to 630 m range. Both the MIMO techniques provide a significant range extension than the FSO system without MIMO where a maximum allowed range of 580 m is observed.
MIMO, FSO, Modulation, Q-factor, BER.
HARMEET KAUR, RAJANDEEP SINGH, RAMANDEEP KAUR, On performance improvement and range extension of free space optical system with MIMO techniques, Optoelectronics and Advanced Materials - Rapid Communications, 16, 5-6, May-June 2022, pp.193-199 (2022).
Submitted at: Nov. 23, 2021
Accepted at: June 6, 2022
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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