CDMA Question: Download Questions PDF
What is Scrambling Code?
Answer:
Scrambling-code identification
During the third and last step of the cell search
procedure, the UE determines the exact primary scrambling
code used by the found cell. The primary scrambling code is
typically identified through symbol-by-symbol correlation
over the CPICH with all codes within the code group
identified in the second step. After the primary scrambling
code has been identified, the Primary CCPCH can be detected
and the system- and cell specific BCH information can be
read.
If the UE has received information about which scrambling
codes to search for, steps 2 and 3 above can be simplified
During the third and last step of the cell search
procedure, the UE determines the exact primary scrambling
code used by the found cell. The primary scrambling code is
typically identified through symbol-by-symbol correlation
over the CPICH with all codes within the code group
identified in the second step. After the primary scrambling
code has been identified, the Primary CCPCH can be detected
and the system- and cell specific BCH information can be
read.
If the UE has received information about which scrambling
codes to search for, steps 2 and 3 above can be simplified
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