Abstract
FIELD: physics computer engineering.SUBSTANCE: invention relates to an apparatus and a method for generating orthogonal cover codes (OCC) and an apparatus and a method for mapping OCC. The apparatus for generating OCC includes: a means for generating a first group of OCC sequences which is used to generate a first group of OCC sequences; a means for generating a second group of OCC sequences which is used to mirror the columns of the first group of OCC sequences to generate a second group of OCC sequences; a means for generating a third group of OCC sequences which is used to perform cyclic shift on the column vectors of the first group of OCC sequences to generate the third group of OCC sequences; and a means for generating a fourth group of OCC sequences which is used to mirror the columns of the third group of OCC sequences to generate the fourth group of OCC sequences.EFFECT: improved randomisation of the pilot sequence solving the problem of data transmission power imbalance satisfying orthogonality requirements in both time dimension and frequency dimension and providing more robust channel estimation performance.31 cl 12 dwg
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