Patent ID: 9693353
Date: 2017-06-27
CPC Classifications: H04B,H04J,H04L,H04W,Y02D

Claim:
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, wherein when a plurality of codewords are used, the plurality of precoded symbol sequences derive 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.