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Unformatted text preview: and decade, There are seven logical channels, all using Pass with a spreading code of 7 bit Sequence, the signals from all source combine at the receiver so that two positive or two negative values reinforce a positive and negative value cancel. To decode a given channel, the receiver multiplies the incoming composite signal by the spreading code for that channel, sums the result, and assigns binary 1 for a positive value and binary 0 for a negative value. a. What are the spreading codes for the seven channels? b. Determine the receiver output measurement for channel 1 and the bit value assigned. C. Repeat part (b) for channel 2. a. C0 = 1110010; C1 = 0111001; C2 = 1011100; C3 = 0101110; C4 = 0010111; C5 = 1001011; C6 = 1100101 b. C1 output = (-5)+1+1+(-3)+(-1)+3+(-3) = -7; bit value = 0 c. C2 output = 5+(-1)+1+(-3)+1+3+3 = +9; bit value = 1...
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- Spring '10
- KANG XI