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A new filter design technique for coded excitation systems

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3 Author(s)
Pai-Chi Li ; Dept. of Electr. Eng. & Comput. Sci. Michigan Univ., Ann Arbor, MI, USA ; Ebbini, E. ; O'Donnell, M.

To increase range resolution and produce acceptable range sidelobe levels, filtering techniques rather than direct complex correlation are applied in coded excitation systems. A filter design technique based on both peak sidelobe levels and minimum sidelobe energy criteria is developed. In comparison to a classic inverse filter, this approach reduces sidelobe levels under a prespecified threshold. Further reduction can be achieved by extending the filter length. This technique can be more generally applied to similar signal processing problems. Both the mathematical formulation and simulation results demonstrating the utility of the technique are presented. A discussion of quantization effects is included.<>

Published in:

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on  (Volume:39 ,  Issue: 6 )

Date of Publication:

Nov. 1992

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