Power consumption estimation models for FIR decimation filters in multi-standard receivers

Many communications embedded systems implement decimation filters. In particular, base-band stage in multistandard receivers is composed of cascade of decimation filters performing channel selection. The number of used filter and the kind of these filters can have a significant impact on the computation complexity and power consumption of multistandard receivers. In This work we present FIR filters´ power consumption estimation models. Models were obtained from a large number of FIR filter syntheses using direct and polyphase forms. Several curves that estimate power consumption were extracted from these experimental results. The idea behind this work is to use the obtained models and curves to help filter designer to make the right choice regarding decimation factor versus power consumption.