2. FDMA TDMA CDMA

5. 1 x 1 = 1 1 x = x 1 = x = 1

6. Low-Bandwidth Signal: High-Bandwidth Spreading Code:...repeated...

7. Low-Bandwidth Signal: High-Bandwidth Spreading Code: Mix is a simple multiply … and transmit.

8. To Decode / Receive, take the signal:

9. Multiply by the same Spreading Code: … to get... … which you should recognize as...

10. To Decode / Receive, take the signal: Multiply by the same Spreading Code: … to get...

11. The Code signal

20. 1 1 2 2 3 3 1 1 2 2 3 3 1&2&31&2&3 1 1 2&3 Spreading De-spreading