TERMINAL APPARATUS, BASE STATION APPARATUS, PILOT TRANSMITTING METHOD, AND PROPAGATION PATH ESTIMATING METHOD

摘要

Provided is a terminal apparatus that, even in cases of applying inter-slot hopping and inter-subframe hopping, can suppress the increase in interference between pilot signals in the same slot, while also suppressing the degradation of the flexibility to design cell cluster structures. In the terminal (200), when hopping type information indicates an inter-slot hopping, a mapping unit (212) arranges a first type of pilot sequences in which a group to which the sequences used in respective slots belong varies on a slot-by-slot basis. When the hopping type information indicates an inter-subframe hopping, the mapping unit (212) arranges a second type of pilot sequences in which a group to which the sequences used in respective slots belong varies on a subframe-by-subframe basis. Further, the sequence group to which the sequences used in any one of the subframes in the second type of pilot sequences belong is identical with the sequence group to which the sequence used in any one of the slots included in that one subframe in the first type of pilot sequences belongs.