| 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 signals 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. A communication apparatus, comprising:
a scheduler, which, in operation, determines a resource allocation to map each of a plurality of precoded symbol sequences to a plurality of frequency resources, each of the plurality of frequency resources being located on a separate position from other frequency resource(s) on a frequency axis, wherein the plurality of precoded symbol sequences are to be generated by multiplying a plurality of symbol sequences by a precoding matrix, each symbol sequence corresponding to one of a plurality of layers, wherein a first plurality of frequency resources to which a first precoded symbol sequence is mapped, and a second plurality of frequency resources to which a second precoded symbol sequence is mapped share: a number of clusters used to map each precoded symbol sequence; cluster sizes; and a frequency position of each cluster, each of the cluster sizes being a discontinuous frequency bandwidth; a transmitter, which, in operation, transmits information indicating the determined resource allocation; a receiver, which, in operation, receives a signal including the plurality of precoded symbol sequences which are mapped to the plurality of frequency resources; and a combiner, which, in operation, combines the plurality of frequency resources to generate symbol sequences. |
