VHDL descriptions of adaptive sample rate notch filters

Adaptive sample rate filtering has been shown to be an efficient and effective method of removing narrowband interference from broadband communication signals. A VHDL description of the algorithm is proposed. VHDL descriptions of algorithms can be more intuitive to the designer than schematic capture programs and with high level synthesis tools, the transition to circuit-level design is facilitated. VHDL makes testing multiple architectures easier and one can readily retarget different technologies. A comparison between the adaptive sample rate technique and the traditional method of adaptation in which filter coefficients are adapted provides a measure of the advantages of the adaptive sample rate technique.