Performance Improvement of OOK /FSO Communication Systems by ADT and DC Extract Technologies

Abstract

Abstract: In order to overcome the shortcomings of traditional decision threshold technology and the reference light do not carry any information in Reference Continuous Wave Light(RCWL) technology which brings the high cost to the free space optical communication (FSO) system. adaptive decision threshold (ADT) technique that current decision threshold is obtained according to the quantized voltage of judged signal previously is proposed . At the same time ,DC component in the signal is extracted as a reference continuous wave(CW) light to estimate the fluctuating characteristics of atmospheric turbulence channel. The research results show that under the condition of bit error rate of 10-3, the adaptive decision threshold and dc extraction technology has lower power loss, which can significantly improve the performance of FSO communication system.

Key words: reference continuous wave (CW) light

CLC Number:

References

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