Question

Two friends 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.

Answer 1

Answer:

1-4+-&-&;(is 5-&:43-2_;34-+"#&?£-_@:+63++__!+&£&