1. Summary of Chapter II 1.Data Transmission

2. Step 1: what we have Analog signal Carry wave (carrier) Received singal ??

3. Step 2 After sampling and quantization, we obtain 1 2 3 2 1 = 100 010 110 010 100 (three-level coding is applied)

4. Step 3 Coding with self-clocking (Manchester code) 10 01 01 01 10 01 10 10 01 01 10 01 10 01 01

5. Step 4: modulation (ASK)

6. Step 5: send over the channel

7. Step 6: Demodulation 10 01 01 01 10 01 10 10 01 01 10 01 10 01 01

8. Step 7: Decode 1 0 0 0 1 0 1 1 0 0 1 0 1 0 0 12 3 2 1

9. Step 8: Convert back to analog signals (assuming our sampling is fast enough) 12 3 2 1

10. 2. Fourier transform (a light touch) Time domain Frequency domain

11. 3. Probability: mean, variance, normal distribution