BGL/SNU1 Introduction to Digital Signal Processing Fall 2003 Byeong Gi Lee School of Electrical...
-
Upload
molly-hardy -
Category
Documents
-
view
214 -
download
0
Transcript of BGL/SNU1 Introduction to Digital Signal Processing Fall 2003 Byeong Gi Lee School of Electrical...
![Page 1: BGL/SNU1 Introduction to Digital Signal Processing Fall 2003 Byeong Gi Lee School of Electrical Engineering Seoul National University EE420.461.](https://reader035.fdocuments.in/reader035/viewer/2022071807/56649e795503460f94b78a63/html5/thumbnails/1.jpg)
BGL/SNU 1
Introduction to Digital Signal Processing
Fall 2003
Byeong Gi Lee
School of Electrical Engineering
Seoul National University
EE420.461
![Page 2: BGL/SNU1 Introduction to Digital Signal Processing Fall 2003 Byeong Gi Lee School of Electrical Engineering Seoul National University EE420.461.](https://reader035.fdocuments.in/reader035/viewer/2022071807/56649e795503460f94b78a63/html5/thumbnails/2.jpg)
BGL/SNU 2
Chapter1. INTRODUCTION to DSP
1.0 Introduction
1.1 Analog vs. Digital
1.2 Applications
1.3 Why Digital?
1.4 Digital Signal Processing
1.5 Course Description
![Page 3: BGL/SNU1 Introduction to Digital Signal Processing Fall 2003 Byeong Gi Lee School of Electrical Engineering Seoul National University EE420.461.](https://reader035.fdocuments.in/reader035/viewer/2022071807/56649e795503460f94b78a63/html5/thumbnails/3.jpg)
BGL/SNU 3
1.1. Analog vs. Digital
i) Signal
Analog : voice, audio, video, ….
Digital : digitized analog signal, data
ii) ProcessingAnalog : passive/active filtering
AM, FM, PM modulation Fourier, Laplace transform
Digital : FIR/IIR filtering AM, windowing Discrete Fourier transform, z-transform
![Page 4: BGL/SNU1 Introduction to Digital Signal Processing Fall 2003 Byeong Gi Lee School of Electrical Engineering Seoul National University EE420.461.](https://reader035.fdocuments.in/reader035/viewer/2022071807/56649e795503460f94b78a63/html5/thumbnails/4.jpg)
BGL/SNU 4
1.1. Analog vs. Digital (cont’d)
iii) System
Analog : R, L, C, Op-amp, switch, …
Digital : adder, multiplier, memory, …
differential equation
difference equation
)()()(
)()()(
012
2
2012
2
2 txbdt
tdxb
dt
txdbtya
dt
tdya
dt
tyda
][]1[]2[][]1[]2[ 012012 nxbnxbnxbnyanyanya
iv) Theory
Circuit theory
DSP theory
![Page 5: BGL/SNU1 Introduction to Digital Signal Processing Fall 2003 Byeong Gi Lee School of Electrical Engineering Seoul National University EE420.461.](https://reader035.fdocuments.in/reader035/viewer/2022071807/56649e795503460f94b78a63/html5/thumbnails/5.jpg)
BGL/SNU 5
1.2. Applications
Processing system
Information
Signal Recognition- radar, sonar, seismic, …
Storage
Transmission
Processing system
Display
InformationCommunications
Storage Media
![Page 6: BGL/SNU1 Introduction to Digital Signal Processing Fall 2003 Byeong Gi Lee School of Electrical Engineering Seoul National University EE420.461.](https://reader035.fdocuments.in/reader035/viewer/2022071807/56649e795503460f94b78a63/html5/thumbnails/6.jpg)
BGL/SNU 6
1.2. Applications (cont’d)
i) Processing
- filtering, modulation, transform, deconvolution
- A/D, D/A conversion, coding
ii) Storage
- LP, tape (analog)
- CD, DVD (digital)
iii) Transmission
- FDM, FDMA, TDMA (analog)
- TDM(PCM), CDMA (digital)
![Page 7: BGL/SNU1 Introduction to Digital Signal Processing Fall 2003 Byeong Gi Lee School of Electrical Engineering Seoul National University EE420.461.](https://reader035.fdocuments.in/reader035/viewer/2022071807/56649e795503460f94b78a63/html5/thumbnails/7.jpg)
BGL/SNU 7
- Environmental change!
Global communication - noise immunity
Multimedia communication - integration
Networking - encryption, packetizing
Wireless, mobile - encryption, compression
1.3. Why Digital?
![Page 8: BGL/SNU1 Introduction to Digital Signal Processing Fall 2003 Byeong Gi Lee School of Electrical Engineering Seoul National University EE420.461.](https://reader035.fdocuments.in/reader035/viewer/2022071807/56649e795503460f94b78a63/html5/thumbnails/8.jpg)
BGL/SNU 8
1.4. Digital Signal Processing
Computer-aided approximation
Exact self-containing processing
Processing complexity
Computing capability
Implementation means
FAST-ENOUGH
* invention of FFT, Cooley Tukey, 1965
DSP is realizable (real-time processing)
![Page 9: BGL/SNU1 Introduction to Digital Signal Processing Fall 2003 Byeong Gi Lee School of Electrical Engineering Seoul National University EE420.461.](https://reader035.fdocuments.in/reader035/viewer/2022071807/56649e795503460f94b78a63/html5/thumbnails/9.jpg)
BGL/SNU 9
1.4. Digital Signal Processing (cont’d)
Theoretical support - DSP theory
Environmental demand
Microelectronics support- processing + storage + logic devices
![Page 10: BGL/SNU1 Introduction to Digital Signal Processing Fall 2003 Byeong Gi Lee School of Electrical Engineering Seoul National University EE420.461.](https://reader035.fdocuments.in/reader035/viewer/2022071807/56649e795503460f94b78a63/html5/thumbnails/10.jpg)
BGL/SNU 10
1.5. Course Description1.5. Course Description
•Objective : To study the theoretical fundamentals on Digital Signal Processing and the mathematical foundations for sampling, discrete-time Fourier Transform, filtering, fast computation techniques and confirm them through computer programming.
•Text : Discrete-Time Signal Processing, 2nd ed., A. V. Oppenheim & R. W. Schafer, Prentice-Hall
•Reference : Digital Signal Processing, 2nd ed., Sanjit K. Mitra, McGraw-Hill
•Homepage : tsp.snu.ac.kr
![Page 11: BGL/SNU1 Introduction to Digital Signal Processing Fall 2003 Byeong Gi Lee School of Electrical Engineering Seoul National University EE420.461.](https://reader035.fdocuments.in/reader035/viewer/2022071807/56649e795503460f94b78a63/html5/thumbnails/11.jpg)
BGL/SNU 11
Week 1 Chap 1. Introduction, Chap 2. Discrete-time signals and systemsWeek 2 Chap 2. Discrete-time signals and systems (CHUSEOK)Week 3 Chap 3. z-transformWeek 4 Chap 4. Sampling & Discrete- and continuous-time signal processingWeek 5 Chap 5. Frequency response of LTI systemsWeek 6 Chap 5. All-pass and Minimum-phase systemWeek 7 Midterm (Univ. Anniversary, Student Festival)Week 8 Chap 6. Basic structure for LTI systemsWeek 9 Chap 6. FIR & IIR systems, Chap 7. FIR & IIR filter designWeek 10 Chap 7. FIR & IIR filter designWeek 11 Chap 8. Discrete Fourier TransformWeek 12 Chap 8. Discrete Fourier TransformWeek 13 Chap 9. Fast transform computationWeek 14 Overall Review and Problem Solving (GLOBECOM)Week 15 Final Exam
1.5. Course Description (cont’d) 1.5. Course Description (cont’d) Fall 2003Fall 2003