Distributed Sensor Networks, 2nd Edition

4

Digital Signal Processing Backgrounds

Yu Hen Hu

University of Wisconsin-Madison

4.1      Introduction

4.2      Discrete-Time System Theory

Discrete Time Signal • Discrete-Time System • Impulse Response Characterization of a Linear and Shift (Time) Invariant Discrete-Time System

4.3      Frequency Representation and the DFT

The z-Transform • Discrete-Time Fourier Transform • Frequency Response • The Discrete Fourier Transform • The Fast Fourier Transform

4.4      Digital Filters

Frequency Response of Digital Filters • Structures of Digital Filters • Example: Baseline Wander Removal

4.5      Sampling, Decimation, Interpolation

Sampling Continuous Analog Signal • Sampling Rate Conversion

4.6      Conclusion

4.A      Appendix A

4.B      Appendix ...