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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/16113
Title: Adaptive coding and modulation (ACM) technique for performance enhancement of FSO Link
Authors: Jaiswal, Anshul K.
Jain V.K.
Kar S.
Published in: Proceedings of 2016 IEEE 1st International Conference on Control, Measurement and Instrumentation, CMI 2016
Abstract: One of the major factors which degrades the Free Space Optics (FSO) link performance is the atmospheric turbulence. Turbulence manifests in increased Bit Error Rate (BER) leading to degradation in the link performance. Adaptive Coding and Modulation (ACM) technique is used to mitigate this effect. This technique is an adaptive transmission scheme wherein transmission parameters such as modulation scheme, code rate, etc., are adjusted based on Channel State Information (CSI). In this paper, we have considered lognormal channel model in low turbulence conditions. Three adaptive transmission schemes viz., variable data rate, variable modulation schemes and variable coding rate are considered. The entire work has been carried out in MATLAB. We see improvement in FSO link performance in terms of average transmitted data rate when variable data rate adaptation scheme is used. Improvement in spectral efficiency is observed when the other two adaptation schemes are used. Design of adaptive transmitter for all the three schemes is presented and data rate of RF feedback channel is determined. © 2016 IEEE.
Citation: Proceedings of 2016 IEEE 1st International Conference on Control, Measurement and Instrumentation, CMI 2016, (2016), 53- 57
URI: https://doi.org/10.1109/CMI.2016.7413709
http://repository.iitr.ac.in/handle/123456789/16113
Issue Date: 2016
Publisher: Institute of Electrical and Electronics Engineers Inc.
Keywords: ACM
bit error rate
channel estimation
ISBN: 9.78E+12
Author Scopus IDs: 57188965234
55431926000
57210255087
Author Affiliations: Jaiswal, A., Department of Electrical Engineering, Indian Institute of Technology, Delhi, New Delhi, 110016, India
Jain, V.K., Department of Electrical Engineering, Indian Institute of Technology, Delhi, New Delhi, 110016, India
Kar, S., Department of Electrical Engineering, Indian Institute of Technology, Delhi, New Delhi, 110016, India
Appears in Collections:Conference Publications [ECE]

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