EE4512 Analog and Digital Communications EE4513 Analog and Digital Communications Laboratory Dr. Dennis Silage

Transcription

1 EE4512 Analog and Digital Communications EE4513 Analog and Digital Communications Laboratory Dr. Dennis Silage Course syllabus Course textbooks Course grades Course objectives

2 EE4512 Analog and Digital Communications Course textbook Available as: bound hardcopy pdf file Kindle download YouTube video blog session twitter stream text message Morse code.wav file

3 EE4512 Analog and Digital Communications Course textbook only kidding!

4 EE4512 Analog and Digital Communications Course textbooks Communication Systems provides the theoretical basis Digital Communication Systems provides simulations for insight and experiential laboratories in EE4513

5 EE4512 Analog and Digital Communications Course syllabus All course materials are also available on Blackboard

6 EE4512 Analog and Digital Communications In-class problems and discussions form the basis for the examinations SNAP quizzes (weekly, 15 minutes, 25%) and examinations (three, hour exams, 35% and a two hour final exam, 40%) are benchmarks of performance Blackboard is used for the course and laboratory documents and to communicate assignments

7 EE4512 Analog and Digital Communications MATLAB and and Simulink modeling of communication systems in-class augments the text description MATLAB and and Simulink modeling in EE4513 Analog and Digital Communications Laboratory In-class discussions, simulation studies and problem solutions Temple Technical Institute Analog Communications Laboratory 1962

8 EE4512 Analog and Digital Communications This course is the application of electrotechnology Professional career path in digital data communications Course sequence continues in EE4542 Telecommunication Engineering Read the assigned text portions and review your notes before class Weekly closed-book but open notes SNAP quizzes to assess performance Edwin and Marian Armstrong with a portable radio 1923

9 EE4512 Analog and Digital Communications SNAP stands for Students Note-taking taking Achieves Performance and the 15 minute quizzes are open-notes notes but closed text book. Your organized notes are a compilation of reading the text and thinking about the concepts and are an aid to learning.

10 EE4512 Analog and Digital Communications The SNAP concept relates to the learning process expressed in the Chinese proverb: I hear and I forget, I see and I remember, I do and I understand.

11 EE4512 Analog and Digital Communications I hear and I forget, Listening to the lecture I see and I remember, Reading the textbook I do and I understand. Compiling the notes The notes are to be handwritten to insure that the process works for you. No xerox copies or electronic versions or textbooks are permitted for use during the SNAP quiz. Leonardo Da Vinci and his notebooks

12 EE4512 Analog and Digital Communications The 15 minute SNAP quizzes are simple calculations and unit conversions (calculators are permitted) from formulas in your notes and conceptual answers to posed questions to assess your understanding of the basic concepts. The SNAP quiz is the assessment of your preparation and organizes your thoughts as part of the engineering method (not that shown here!).

13 EE4512 Analog and Digital Communications Chapter 1 Chapter 1 Introduction

14 EE4512 Analog and Digital Communications Chapter 1 Chapter 1 Introduction Components of a Communication System Pages 1-51

15 EE4512 Analog and Digital Communications Chapter 1 Modulation (partial definition): 3: to vary the amplitude, frequency, or phase of (a carrier wave or a light wave) for the transmission of information (as by radio) Carrier (partial definition): 2: an electromagnetic wave or alternating current whose modulations are used as communications signals (as in radio, telephonic, or telegraphic transmissions

16 EE4512 Analog and Digital Communications Chapter 1 Analog modulation: continuous information such as speech or video encoded as an amplitude Digital modulation: discrete information such as binary data encoded as a frequency shift or a phase shift

17 EE4512 Analog and Digital Communications Chapter 1 Source Simulink subsystems Transmitter Receiver User Channel with noise MS Figure 1.16 Analog amplitude modulation (AM)

18 EE4512 Analog and Digital Communications Chapter 1 Source Simulink subsystems Transmitter Receiver User Coherent demodulation Channel with noise MS Figure 1.16 Analog amplitude modulation (AM)

19 EE4512 Analog and Digital Communications Chapter 1 Source Simulink subsystems Transmitter Receiver User Non-coherent demodulation Channel with noise MS Figure 1.20 Analog amplitude modulation (AM)

20 EE4512 Analog and Digital Communications Chapter 1 Sinusoidal input and DSB AM

21 EE4512 Analog and Digital Communications Chapter 1 Simulink subsystem Sinusoidal input and DSB AM

22 EE4512 Analog and Digital Communications Chapter 1 Carrier DSB modulated spectrum DSB AM temporal signal and power spectrum

23 EE4512 Analog and Digital Communications Chapter 1 Original spectrum DSB demodulated spectrum 2 x carrier frequency Demodulated DSB AM spectrum

24 EE4512 Analog and Digital Communications Chapter 1 Random data source Bit error rate MS Figure 3.12 Digital binary phase shift keying (BPSK)

25 EE4512 Analog and Digital Communications Chapter 1 Input binary data, rate r b = 1 kb/sec, bit time T b = 1 msec T b = 1 msec Output binary data with no noise, note 2 bit delay in output

26 EE4512 Analog and Digital Communications Chapter 1 Input binary data, rate r b = 1 kb/sec, bit time T b = 1 msec Received signal with significant additive noise Where s s the signal?

27 EE4512 Analog and Digital Communications Chapter 1 Input binary data, rate r b = 1 kb/sec, bit time T b = 1 msec Output binary data with bit errors due to additive noise

28 EE4512 Analog and Digital Communications Chapter 1 End of Chapter 1 Introduction

29 EE4513 Analog and Digital Communications Laboratory Chapter 1 Chapter 1 Communication Simulation Techniques Introduction to MATLAB and Simulink Blocksets Simulation displays

30 EE4513 Analog and Digital Communications Laboratory Chapter 1 Simulink Library Browser: Commonly Used Blocks

31 EE4513 Analog and Digital Communications Laboratory Chapter 1 Simulink Library Browser: Communications Blockset

32 EE4513 Analog and Digital Communications Laboratory Chapter 1 Simulink Library Browser: Signal Processing Blockset

33 EE4513 Analog and Digital Communications Laboratory Chapter 1 Simulink Library Browser: Simulink Extras

34 EE4513 Analog and Digital Communications Laboratory Chapter 1 Simulink Library Browser and the model window MS Figure 1.2

35 EE4513 Analog and Digital Communications Laboratory Chapter 1 Source parameter block for the Random Integer Generator block and the Simulink model window MS Figure 1.3

36 EE4513 Analog and Digital Communications Laboratory Chapter 1 Configuration parameter window for the Simulink simulation MS Figure 1.4

37 EE4513 Analog and Digital Communications Laboratory Chapter 1 Sinusoid and half wave rectified sinusoid Simulink temporal model MS Figure 1.6

38 EE4513 Analog and Digital Communications Laboratory Chapter 1 Sinusoid and half wave rectified sinusoid temporal display in the Simulink Figures window MS Figure 1.7

39 EE4513 Analog and Digital Communications Laboratory Chapter 1 Half wave rectified sinusoid Simulink spectral display model MS Figure 1.8

40 EE4513 Analog and Digital Communications Laboratory Chapter 1 Scope and axis properties parameter windows of the Spectrum Scope block MS Figure 1.9

41 EE4513 Analog and Digital Communications Laboratory Chapter 1 Scaled power spectral display of a half wave rectified sinusoid, f o = 1 khz MS Figure 1.10

42 EE4513 Analog and Digital Communications Laboratory Chapter 1 Gaussian noise source and lowpass filtered power spectral density display MS Figure 1.11

43 EE4513 Analog and Digital Communications Laboratory Chapter 1 Gaussian noise source and LPF PSD MS Figure 1.12 Flat PSD LPF PSD, f cutoff = khz

44 EE4513 Analog and Digital Communications Laboratory Chapter 1 Gaussian noise source and lowpass filtered autocorrelation display MS Figure 1.13

45 EE4513 Analog and Digital Communications Laboratory Chapter 1 Gaussian noise source and lowpass filtered power autocorrelation display MS Figure 1.14 Uncorrelated Correlated

46 EE4513 Analog and Digital Communications Laboratory Chapter 1 End of Chapter 1 Communication Simulation Techniques