FDMA TDMA CDMA 1 x 1 = 1 1 x = x 1 = x = 1 Low-Bandwidth Signal: High-Bandwidth Spreading Code:...repeated...

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Presentation transcript:

FDMA TDMA CDMA

1 x 1 = 1 1 x = x 1 = x = 1

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

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

To Decode / Receive, take the signal:

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

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

The Code signal

&2&31&2& &3 Spreading De-spreading