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Canonical Signed Digit StudyFinite Impulse Response digital filter using Canonical Signed-Digit (CSD) number representation for the coefficients has been studied and its computer simulation results are presented here. Minimum Mean Square Error (MMSE) criterion is employed to optimize filter coefficients into the corresponding CSD numbers. To further improve coefficients optimization process, an extra non-zero bit is added for any filter coefficients exceeding 1/2. This technique improves frequency response of filter without increasing filter complexity almost at all. The simulation results show outstanding performance in bit-error-rate (BER) curve for all CSD implemented digital filters included in this presentation material.
Document ID
19970002920
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Kim, Heechul (NASA Lewis Research Center Cleveland,OH United States)
Date Acquired
September 6, 2013
Publication Date
October 1, 1996
Subject Category
Communications And Radar
Report/Patent Number
E-10466
NASA-TM-107335
NAS 1.15:107335
Accession Number
97N11709
Funding Number(s)
PROJECT: RTOP 233-5A-5G
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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