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US07010557B2 Low power decimation system and method of deriving same 有权
低功率抽取系统及其推导方法

Low power decimation system and method of deriving same
摘要:
A decimation system comprising a plurality, L, of cascaded Finite Impulse Response (FIR) decimation filters. Each decimation filter has a transfer function of the form H(z)=(1+z−1)N, where N is an integer. Each FIR decimation filter performs decimation by a common factor I. The cascaded FIR decimation filters together achieve a decimation result substantially identical to that of an Nth-order CIC filter (that is, a CIC filter having N integrator stages) that performs decimation by a factor IL.
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