EDN

Polyphase filters reduce saturation

Digital signal processing is ubiquitous in modern electronic systems, from MP3 players to digital cameras to wireless handsets. One of the mainstays of a DSP designer’s tool box is the FIR ...
EDN

Filter banks, part 2: Optimization and synthesis

Before we proceed, let's quickly review our filter bank example. Our example, shown in Figure 1, is a size 16 DFT filter bank. The color scheme shows the sample rate change where a 16 MHz input sample ...
Nature

Optimization Techniques for Finite Impulse Response Filter Design

Finite Impulse Response (FIR) filters are ubiquitous in digital signal processing, valued for their inherent stability and exact linear-phase response. The design challenge centres on selecting a ...
Design-Reuse

Optimizing Up/Down Conversion with FPGA Techniques

Digital upconverters (DUCs) and digital downconverters (DDCs) are important components of every modern wireless base station design. While many DUC and DDC designs are available, there is a clear call ...
Electronic Design

Slice And Dice Chunks Of Radio Spectrum

The path to real-time wideband channelization is camouflaged by different techniques. Among the competing approaches are Pipelined FFT, polyphase DFTs, multiple digital downconverters (DDCs), and both ...