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APPARATUS AND METHOD OF ERROR VECTOR MEASUREMENT FOR DIGITAL AND MULTIPLE-INPUT MULTIPLE OUTPUT IMO COMMUNICATION SYSTEMS

  • US 20090175181A1
  • Filed: 01/08/2008
  • Published: 07/09/2009
  • Est. Priority Date: 01/08/2008
  • Status: Active Grant
First Claim
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1. An apparatus in a multiple-input multiple-output (MIMO) receiving station, comprising:

  • an EVM measurement unit for SIGNAL field, used to measure a combined effect of all spatial streams to achieve the measurement of averaged EVMSIG; and

    an EVM measurement unit for DATA field, electrically connected to the EVM measurement unit for SIGNAL field, used in each spatial stream to support unequal modulation and coding rate (MCS) for multiple streams to achieve the measurement of averaged EVMDATA.

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