Two binary symmetrical channels are in cascade, as shown in Figure 12.45. Determine the capacity of each channel. The overall system with inputs x₁and x₂and out puts z₁and z₂can be represented as shown with p₁₁, p₁₂, p₂₁, and p₂₂properly chosen. Determine these four probabilities and the capacity of the overall system. Comment on the results.

Figure 12.45

Transcribed Image Text:

0.75 0.9 Z1 X10 0.25 0.1 0.25 0.1 Z2 У2 X20 0.75 0.9 Channel 2 Channel 1 P11 X1 P12 P21 Z2 P22 Equivalent channel