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Alice and Bob are experimenting with CDMA using a W 2 Walsh table. Alice uses the code [ + 1 , + 1 ] and

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 (6)16 and Bob sends (B)16. Show how they can detect what the other person has sent?

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