Patent ID: 8345566

Claim:
A transmitting-end apparatus in a wireless communication system, the apparatus comprising: a generator for generating a sequence corresponding to an index to be fed back; a plurality of mappers for mapping the sequence to a first set of resource blocks in a fast feedback channel by using a first mapping pattern and to a second set of resource blocks in the fast feedback channel by using a second mapping pattern; and a transmitter for transmitting the sequence mapped to a plurality of sets of resource blocks, wherein the sequence is mapped to each of the plurality of sets of resource blocks, wherein each element of the sequence is mapped to each resource block, wherein a mapping order of elements of the sequence in the first mapping pattern is different from a mapping order of elements of the sequence in the second mapping pattern, wherein the first set of resource blocks and second set of resource blocks have a predetermined same number of resource blocks each other, and wherein the first set of resource blocks is differently located from the second set of resource block in the fast feedback channel.