Consider a CDMA system with 4-bit chipping sequences.

Computer Networking: A Top-Down Approach (7th Edition)
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Question 2
Consider a CDMA system with 4-bit chipping sequences.
a) In standard CDMA, if 4-bit chipping sequences are used, the maximum number of users is 4.
Explain why.
b) Are the following chipping sequences a valid choice: [1,1,-1,-1], [1,1,1,1], [1,-1,1,-1], [1,-1,-1,1]?
Explain your answer.
Transcribed Image Text:Question 2 Consider a CDMA system with 4-bit chipping sequences. a) In standard CDMA, if 4-bit chipping sequences are used, the maximum number of users is 4. Explain why. b) Are the following chipping sequences a valid choice: [1,1,-1,-1], [1,1,1,1], [1,-1,1,-1], [1,-1,-1,1]? Explain your answer.
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