METHOD FOR ALLOCATING SEQUENCE AND METHOD FOR SETTING CIRCULAR SHIFT SEQUENCE AGAINST FREQUENCY OFFSET

摘要

A method for allocating a sequence and a method for setting a circular shift sequence over a frequency offset are provided to increase a detection error or a false alarm rate due to a frequency offset by allocating a sequence without a circular shift applied thereto to a cell having a frequency offset greater than a certain level. Cell information in which a frequency offset is higher than a certain level is obtained. When a sequence applying a cyclic shift is allocated to the cell having the frequency offset higher than the certain level, a cyclic shift application interval is set in consideration of the position of one or more aliases of a reception sequence generated due to the frequency offset. In setting the cyclic shift application interval, the reception sequence and a channel response position of the aliases are checked, and a cyclic shift application available interval is set such that the reception sequence and the channel response position of the aliases do not overlap by a shift due to one or more of a return delay and a channel delay spread.