EDN

Putting a polyphase filter in processor array

While most articles in this section discuss the reprogramming of graphics processors, other large arrays of processing elements are available as standard-product ICs for other applications. In some ...
EDN

Adjacent channel rejection is a key for comparing transient responses of filter Banks

This brief paper examines the most important differences between the responses of the Fast Fourier Transform (FFT) and Polyphase Discrete Fourier Transform (DFT) filter banks. In general, while the ...
Electronics Weekly

RF Engines adds fast digital filter with polyphase

RF Engines is offering high speed polyphase discrete Fourier transform (DFT) cores for DSP filters. According to the Isle of Wight-based DSP specialist, polyphase DFTs provide high quality filter ...
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 ...
Design-Reuse

Building Soft Radio Channelizers Using Top-Down Design

Software-defined radios (SDRs) are adaptable transceiver systems that learn and adapt to transmission and channel environments with software. A key element of an SDR architecture is the channelizer, ...