Method and apparatus for searching position of downlink synchronous code
A technology of synchronization code and code number, which is applied in the field of signal search and can solve problems such as failure to search for SYNC_DL
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[0047] In order to enable those skilled in the art to better understand the present invention, the methods provided by the present invention will be specifically described below in conjunction with specific examples. figure 2The flow of the method is shown.
[0048] In step 21, each candidate SYNC_DL is slidingly correlated with the signal received in the characteristic window, and the correlation peak value of each candidate SYNC_DL in each time slice is obtained;
[0049] And in step 22, for each candidate SYNC_DL, calculate the correlation peak ratio of each time slice to the adjacent time slice, and obtain the correlation peak ratio of each candidate SYNC_DL in each time slice.
[0050] Then, in step 23, the maximum correlation peak ratio of each candidate SYNC_DL in each subframe and the time slice where the maximum correlation peak ratio is located are recorded.
[0051] At the end of the search period, in step 24, for each candidate SYNC_DL, its maximum correlation pe...
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