Pipelined Hogenauer CIC filters using field-programmable logic and residue number system

Field-programmable logic (FPL) is on the verge of revolutionizing digital signal processing (DSP) in the manner that programmable DSP microprocessors did nearly two decades ago. While FPL densities and performance have steadily improved to the point where some DSP solutions can be integrated into a single FPL chip, they still have limited use in high-precision high-bandwidth applications. It is shown that in such cases, the residue number system (RNS) can be an enabling technology. The design of a high-decimation rate digital filter is presented which demonstrates the RNS-FPL synergy