| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for setting a cyclic shift sequence to a frequency offset. <P>SOLUTION: One embodiment of the present invention includes processes of calculating distance between alias channel response positions of sequences to be generated by the channel response positions of the sequences and frequency offsets, calculating the number of cyclic shifts for every group constituting the sequences by sections of the calculated distance, and setting cyclic shift application sections. Even when an input signal is shifted by channel delay diffusion and radiowave delay, the cyclic shift application sections are set by a simple method at positions which do not overlap each other in consideration of channel responses of reception sequences and positions of aliases of the reception sequences to sharply reduce detection errors and erroneous alarm ratio by the frequency offsets. When the sequences to which the cyclic shifts are applied are allocated to cells whose frequency offsets are at a predetermined level or higher, influences of the frequency offsets are minimized in high mobility cells. <P>COPYRIGHT: (C)2013,JPO&INPIT |
