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