GUEST EDITORIAL: COMPUTATIONALLY EFFICIENT DIGITAL FILTERS: DESIGN TECHNIQUES AND APPLICATIONS

摘要

Welcome to this Special Issue on Computationally Efficient Digital Filters: Design Techniques and Applications. Digital filters made their appearance along with the first digital computer in the late 1940s. Today digital filters are at the core of many digital signal processing systems and emerging digital products. With the advances in CMOS technologies, it is now possible to integrate numerous functions into a single silicon chip, leading to system-on-chip (SoC) solutions. This opens a door for many innovative applications, like portable gadgets and implantable medical devices. One of the main challenges in the design of the SoC is low power consumption. For digital filters, the major dynamic power consumption is due to arithmetic operations, such as multipliers and adders/subtracters; lowering power consumption in this case amounts to developing computationally efficient filter structures and their design techniques.