Synchronization and detection of binary data in free-space optical communication systems using Haar wavelet transformation

Nader Namazi; Ray Burris; Charles Conner; G. Charmaine Gilbreath; William Scharpf

doi:10.1117/12.561473

20 October 2004 Synchronization and detection of binary data in free-space optical communication systems using Haar wavelet transformation

Nader Namazi, Ray Burris, Charles Conner, G. Charmaine Gilbreath, William Scharpf

Author Affiliations +

Proceedings Volume 5550, Free-Space Laser Communications IV; (2004) https://doi.org/10.1117/12.561473
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

A new method is presented to perform the synchronization and detection of the binary data from the FSO signal. Based on the wavelet transformation, a new band-pass filter is developed and implemented. It is shown that the Haar wavelet is an excellent choice for this purpose. The center frequency of this filter is a function of the scale and could be adjusted to adapt to the variation of the channel. The output of the filter is zero-mean and is closely related to the derivative of the binary data. The filter has a linear phase; therefore, its output is used for synchronization and detection of the data. Analysis of the method is presented using Fourier transformation. In addition, simulation experiments are performed and presented using the real data. The results of the experiments indicate that the Haar wavelet transform is a robust and effective tool in dealing with FSO data.

Citation Download Citation

Nader Namazi, Ray Burris, Charles Conner, G. Charmaine Gilbreath, and William Scharpf "Synchronization and detection of binary data in free-space optical communication systems using Haar wavelet transformation", Proc. SPIE 5550, Free-Space Laser Communications IV, (20 October 2004); https://doi.org/10.1117/12.561473

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