Base station apparatus and resource allocation method

摘要

A wireless communication terminal apparatus wherein even when a SC-FDMA signal is divided into a plurality of clusters and the plurality of clusters are then mapped to respective discontinuous frequency bands (when C-SC-FDMA is used), the improvement effect of system throughput can be maintained, while the user throughput can be improved. In the apparatus, a DFT unit (210) subjects a symbol sequence of time domain to a DFT process, thereby generating signals of frequency domain. A setting unit (211) divides the signals input from the DFT unit (210) into a plurality of clusters according to a cluster pattern that is in accordance with an MCS set, an encoding size, or the number of Ranks occurring during MIMO transmissions, which is indicated in those signal input, and then maps the plurality of clusters to the respective ones of a plurality of discontinuous frequency resources, thereby setting a constellation of the plurality of clusters in the frequency domain.

主权项

1. An integrated circuit, comprising:
circuitry configured to control a process, the process comprising:
performing discrete Fourier transformations (DFT) on a plurality of symbol sequences, each symbol sequence corresponding to one of a plurality of layers;multiplying the plurality of DFT performed symbol sequences by a precoding matrix, generating a plurality of precoded symbol sequences; andmapping each of the plurality of precoded symbol sequences on a same set of discontinuous frequency resources, each frequency resource being located on a separate position from other frequency resources on a frequency axis, wherein the same set of discontinuous frequency resources means that a first set of discontinuous frequency resources to which a first precoded symbol sequence is mapped, and a second set of discontinuous frequency resources to which a second precoded symbol sequence is mapped share: a number of clusters used to map each precoded symbol sequence; a cluster size, the cluster size being a discontinuous frequency resource bandwidth; and a frequency position of each cluster, wherein when a plurality of codewords are used, the plurality of precoded symbol sequences derives from a plurality of first symbol sequences corresponding to a first codeword and a plurality of second symbol sequences corresponding to a second codeword which is different from the first codeword; anda digital/analog converter, which, in operation, performs digital/analog conversion on the mapped plurality of precoded symbol sequences.