Non-recursive cascaded integrator-comb decimation filters with integer multiple factors

Abstract

In this paper, multi-rate non-recursive architecture for Cascaded Integrator-Comb(CIC) decimation filters with an arbitrary factor is proposed. The CIC filters are widely used in high speed wireless communication systems since they have multiplier-less and multi-rate low-power structure. Even conventional non-recursive CIC structure is multi-rate, this architecture can be structured only in case of M-th power-of-two decimation factor. This paper proposes that non-recursive CIC filters with any decimation factors of product form can be structured with multi-rate low-power architecture. Power consumption of the proposed architecture is compared with that of the conventional non-recursive architecture.