EDN

Converting floating-point applications to fixed-point

Digital signal processors (DSPs) represent one of the fastest growing segments of the embedded world. Yet despite their ubiquity, DSPs present difficult challenges for programmers. In particular, ...
EDN

Application dictates choice: fixed- or floating-point DSP?

Without a doubt, many algorithms can benefit from employing a floating-point implementation. The code can be simpler and take fewer cycles to execute than fixed-point implementations. However, these ...
Electronic Design

Dealing with the Absence of an FPU Using Fixed Point in Ada

Many numerical applications typically use floating-point types to compute values. However, in some platforms, a floating-point unit may not be available. Other platforms may have a floating-point unit ...
Electronic Design

Toolkit Facilitates Fixed-Point DSP Development Using Matlab Modeling

Migrating floating-point algorithms to fixed-point platforms got significantly easier for users of the Mathworks' Matlab model-based development environment. Catalytic's Fixed-Point DSP Studio helps ...
Design-Reuse

Implementing matrix inversions in fixed-point hardware

We implement fixed-point matrix inversion on a Virtex-4 FPGA using a synthesizable QR-decomposition MATLAB model and the AccelDSP Synthesis tool. The resulting function occupies 12% of a XC4VSX55 ...
Design-Reuse

Accelerating Fixed-Point Design for MB-OFDM UWB Systems

Ultrawideband (UWB) wireless technology is poised to replace high-speed data cables in homes and offices. 1 UWB technology will be capable of transmitting hundreds of megabits per second over ...