Question: Alice and Bob are experimenting with CDMA using a w2 Walsh table. Alice uses the code [+1, -1] and Bob uses the code [+1, +1].

Alice and Bob are experimenting with CDMA using a w2 Walsh table. Alice uses the code [+1, -1] and Bob uses the code [+1, +1]. Assume that they simultaneously send a hexadecimal digit to each other. Alice sends (8)16 and Bob sends (C) 16. Show how they can detect what the other person has sent in details.

(Note: Show your work in clear and neat steps.)

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