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Teaching DSP software development: from design to fixed-point implementations

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2 Author(s)
Woon-Seng Gan ; Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore ; Kuo, S.M.

In this paper, a digital signal processing (DSP) software development process is described. It starts from the conceptual algorithm design and computer simulation using MATLAB, Simulink, or floating-point C programs. The finite-word-length analysis using MATLAB fixed-point functions or Simulink follows with fixed-point blockset. After verification of the algorithm, a fixed-point C program is developed for a specific fixed-point DSP processor. Software efficiency can be further improved by using mixed C-and-assembly programs, intrinsic functions, and optimized assembly routines in DSP libraries. This integrated software-development process enables students and engineers to understand and appreciate the important differences between floating-point simulations and fixed-point implementation considerations and applications.

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Education, IEEE Transactions on  (Volume:49 ,  Issue: 1 )