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Wireless communication system and receiving device

  • US 7,272,294 B2
  • Filed: 05/02/2006
  • Issued: 09/18/2007
  • Est. Priority Date: 02/21/2006
  • Status: Expired due to Fees
First Claim
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1. A wireless communication system in which a transmitting device having a plurality of transmitting antennas and a receiving device having a plurality of receiving antennas communicate in an orthogonal frequency division multiplexing system,said transmitting device comprising:

  • a status acquiring unit acquiring a channel matrix generated by previous signals from said receiving device;

    a partition unit partitioning a transmission data sequence into a plurality of data streams; and

    a mapping unit mapping each of the plurality of data streams to each of the plurality of transmitting antennas by using, for a precoding matrix, columns, corresponding to a stream count of the plurality of data streams, of a right singular matrix acquired by singular value decomposition of the channel matrix, andsaid receiving device comprising;

    an estimation unit estimating a present channel status from received signals and generating a present channel matrix representing the present channel status; and

    a decoding unit Viterbi-decoding the received signals by weighting a path metric by using a weighting coefficient corresponding to a signal-to-noise ratio obtained from the present channel matrix.

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