Base station apparatus and resource allocation method

  • US 9,173,220 B2
  • Filed: 12/23/2014
  • Issued: 10/27/2015
  • Est. Priority Date: 11/14/2008
  • Status: Active Grant
First Claim
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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; and

    mapping 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; and

    a digital/analog converter, which, in operation, performs digital/analog conversion on the mapped plurality of precoded symbol sequences.

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