Problem 3. Consider the direct-sequence CDMA system as de- scribed in Lecture 15. At the receiver suppose that instead of using the local code qi(t) we instead use q₁(t+A) where A is some ± fraction of a bit time, i.e., the local code may be shifted one direction or the other. Compute the degradation (in dB) to E₁/No due to a nonzero A at the output of the corre- lator for BPSK signaling. You may assume for the local code that adjacent chips are equally likely to match or differ.
Problem 3. Consider the direct-sequence CDMA system as de- scribed in Lecture 15. At the receiver suppose that instead of using the local code qi(t) we instead use q₁(t+A) where A is some ± fraction of a bit time, i.e., the local code may be shifted one direction or the other. Compute the degradation (in dB) to E₁/No due to a nonzero A at the output of the corre- lator for BPSK signaling. You may assume for the local code that adjacent chips are equally likely to match or differ.
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![Problem 3.
Consider the direct-sequence CDMA system as de-
scribed in Lecture 15. At the receiver suppose that instead of using the local
code qi(t) we instead use q₁(t+A) where A is some ± fraction of a bit time,
i.e., the local code may be shifted one direction or the other. Compute the
degradation (in dB) to E₁/No due to a nonzero A at the output of the corre-
lator for BPSK signaling. You may assume for the local code that adjacent
chips are equally likely to match or differ.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F03c3956a-8003-44d2-9b2a-84d1edb1c090%2F03147201-cb75-48e8-a27a-25b4b20d15b4%2F1p36nei_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Problem 3.
Consider the direct-sequence CDMA system as de-
scribed in Lecture 15. At the receiver suppose that instead of using the local
code qi(t) we instead use q₁(t+A) where A is some ± fraction of a bit time,
i.e., the local code may be shifted one direction or the other. Compute the
degradation (in dB) to E₁/No due to a nonzero A at the output of the corre-
lator for BPSK signaling. You may assume for the local code that adjacent
chips are equally likely to match or differ.
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