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The lattice wave digital filter (LTWDF) is known to be especially suitable for high speed filtering applications, owing to the low coefficient wordlengths required. The authors present a comparison between several LTWDF architectures using redundant and non-redundant arithmetic. It is shown that architectures using non-redundant arithmetic require up to 2.5 times less VLSI area, while offering higher sample rates for most practical filtering applications.
Inspec keywords: lattice filters; redundant number systems; VLSI; wave digital filters; digital arithmetic; pipeline arithmetic
Other keywords:
Subjects: Digital filters; Digital filters; Digital arithmetic methods