Mismatched filter

Details Mismatched filter Mismatched filter

2008-12-15

2010-11-30

Tarcza, Thomas H (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

With particular circuit

C342S101000

Reexamination Certificate

active

07843382

ABSTRACT:
The present solution provides methods and systems for realizing hardware efficient mismatched filters for pulse compression codes. For pulse compression codes with sufficiently small sidelobe structures, such as in the cases of odd length Barker codes, the proposed filters require a small number of adders and multipliers per output. This translates to significantly reduced chip-area and lower power consumption when implemented on a chip. In one aspect, the present application features a method for suppressing an undesired part of a waveform. The method includes filtering a signal via a filter. In one embodiment, the signal includes an expected waveform that can be represented as a sum of the desired part and the undesired part. The impulse response of the filter can be represented a sum of the desired part and a negative of the undesired part.

REFERENCES:
patent: 5070337 (1991-12-01), Chen et al.
patent: 5414428 (1995-05-01), Gallagher et al.
patent: 6363107 (2002-03-01), Scott
patent: 2003/0198340 (2003-10-01), Picciolo et al.
patent: 2005/0228841 (2005-10-01), Grobert
patent: 2005/0242985 (2005-11-01), Ponsford et al.
patent: 2006/0072693 (2006-04-01), Hui

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