Multiported register file for coefficient use in filters

Details Multiported register file for coefficient use in filters Multiported register file for coefficient use in filters

H - Electricity

03

H

H03H 17/02 (2006.01) H03H 21/00 (2006.01)

Patent

CA 2254545

Multiported register files for use in storing coefficients in adaptive FIR filters. incorporate computational ability, e.g., the ability to perform computation on coefficient values or derivatives thereof, or to control the operations performed thereon. For example, a multiported register file may incorporate an overflow/underflow detection and/or saturation unit. Also, the multiported register file may incorporate a special encoder to speed up the multiplication process, e.g., the so-called "Booth" encoder. Likewise, the multiported register file may incorporate a converter for changing the representation of the coefficients, e.g., a two's complement to sign-magnitude converter. All computation performed in the multiported register file is performed outside of the critical path of the filtering or of the coefficient updating. Using such improved multiported register files, adaptive FIR filters can be constructed which operate faster, and with lower power consumption.

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