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Reception and measurement of MIMO-OFDM signals with a single receiver

  • US 8,238,463 B1
  • Filed: 06/16/2008
  • Issued: 08/07/2012
  • Est. Priority Date: 06/14/2007
  • Status: Active Grant
First Claim
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1. A method of processing a received signal having a first plurality of subcarriers from a first transmitter carried over a first channel and a second plurality of subcarriers from a second transmitter carried over a second channel, wherein the first plurality of subcarriers comprises a first plurality of subcarrier pilots and the second plurality of subcarriers comprises a second plurality of subcarrier pilots, the method comprising:

  • estimating a first impairment parameter for the first plurality of subcarrier pilots;

    estimating a second impairment parameter for the second plurality of subcarrier pilots;

    removing the first estimated impairment parameter from at least one of the first plurality of subcarrier pilots;

    removing the second estimated impairment parameter from at least one of the second plurality of subcarrier pilots;

    estimating the first channel using the at least one of the first plurality of subcarrier pilots with the impairment parameter removed;

    estimating the second channel using the at least of one of the second plurality of subcarrier pilots with the impairment parameter removed; and

    decoding the received signal according to Alamouti space-time based coding using the channel estimation of the first channel and the channel estimation of the second channel.

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