Continuous Phase Oscillator in Simulink
by Rick Rosson
14 Dec 2007
(Updated 03 Jun 2009)
Generate a simple cosine wave in Simulink
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| File Information |
| Description |
A Simulink model that generates and displays a simple cosine wave. The model computes the cosine function using the continuous phase method, which is based on Euler's formula for the complex exponential. The cosine generator is provided as a subsystem, which the user can copy-and-paste into other models. The subsystem's mask allows the user to control two parameters: the oscillation frequency 'Fc', and the sampling rate 'Fs'.
The model includes three versions of the oscillator sub-system:
1. Floating-point (double-precision).
2. Fixed-point with no magnitude stabilization
3. Fixed-point with magnitude stabilization
All three outputs are plotted using a Time Domain Scope. In addition, the first and third outputs are also plotted in the Frequency Domain using the Spectrum Scope.
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| Required Products |
DSP System Toolbox
Signal Processing Toolbox
Simulink
Simulink Fixed Point
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| MATLAB release |
MATLAB 7.8 (R2009a)
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| Comments and Ratings (1) |
| 02 Sep 2010 |
siddhu
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| Updates |
| 18 Dec 2007 |
Fix the keywords, and clean-up the description. |
| 20 Dec 2007 |
Minor improvements to the .mdl file and the screenshot. |
| 10 Jan 2008 |
Added more detail to the description |
| 10 Jan 2008 |
Fixed typo in description, and clarified 'grow' to 'grow without bound'. |
| 03 Jun 2009 |
Major update to incorporate fixed-point and magnitude stabilization. |
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