1. Figure 6.7: Distorsion

2. Bandbredd = övre gränsfrekvens – undre gränsfrekvens

3. Figure 3.6 Sine wave examples (continued)

4. Figure 3.9 Three harmonics

5. Figure 3.10 Adding first three harmonics

6. Figure 3.11 Frequency spectrum comparison

7. Point-to-point communication MikrofonHögtalare Source codingSource decoding Digitalizating compression 0110 Error managementError control. 0100010 Bitfel 0110010 Flow control ModulationDemodulation 0110010 NACK ACK Layer 6 Layer 2 Layer 1 Layer 7

8. Aliasing

9. Quantization noice

11. Digital modulation methods Binär signal ASK = Amplitude Shift Keying (AM) FSK = Frequency Shift Keying (FM) PSK = Phase Shift Keying (PSK)

12. Spread spectrum DS-CDMA = Direct Sequence Code Division Multiple Access Chip sequencies

13. Figure 13.15 Encoding rules

14. Figure 13.16 CDMA multiplexer

15. Figure 13.17 CDMA demultiplexer