Abstract
An apparatus and method for OCC generation and an apparatus and method for OCC mapping are disclosed in the present invention, wherein the apparatus for OCC generation includes: a first OCC sequence used for generating a group of first OCC sequences Means for creating a group; Means for generating a group of second OCC sequences used for column mirroring for a group of first OCC sequences to generate a second group of OCC sequences; Means for generating a group of third OCC sequences used to perform a cyclic shift on column vectors of a group of first OCC sequences to generate a group of third OCC sequences; And means for generating a group of fourth OCC sequences to be used for mirroring the columns of the group of third OCC sequences to generate a group of fourth OCC sequences. According to the aforementioned technical solution of the present invention, the randomization of the pilot sequence is improved, the problem of data transmission power imbalance is solved, orthogonality requirements in both time dimension and frequency dimension are satisfied, and more reliable channel estimation performance is provided do.
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