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Proceedings Paper

Research on denoising in WDM laser inter-satellites communication system
Author(s): Chuanhua Wen; Yang Su; Yuquan Li; Li Zhou
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Paper Abstract

This paper proposes a method of wavelet analysis for de-noising at receiver system in WDM laser inter-satellites communication. Background noises such as galactic noise, sunlight and etc make the received power reduce. The noisy signal is decomposed using wavelets and wavelet packets; then is transformed into wavelet coefficients and the lower order coefficients are removed by applying a soft threshold. De-noised signal is obtained by reconstructing with the remaining coefficients. In this paper, we evaluate different wavelet analysis for de-noising at receiver system in inter-satellites laser communication. Simulation results indicate that if the wavelet de-noising method is used with different wavelet analyzing functions, it will improves the signal to noise ratio (SNR) about 2 dB when the signal frequency is 1.5 GHz.

Paper Details

Date Published: 21 September 2006
PDF: 9 pages
Proc. SPIE 6353, Optical Transmission, Switching, and Subsystems IV, 63532B (21 September 2006); doi: 10.1117/12.687270
Show Author Affiliations
Chuanhua Wen, PLA Univ. of Science and Technology (China)
Yang Su, PLA Univ. of Science and Technology (China)
Yuquan Li, Chonqing Institute of Communications (China)
Li Zhou, Wuhan Commanding Communication Academy (China)


Published in SPIE Proceedings Vol. 6353:
Optical Transmission, Switching, and Subsystems IV
Chang Soo Park; Shizhong Xie; Curtis R. Menyuk; Ken-ichi Kitayama, Editor(s)

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