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MU-MIMO-OFDMA SYSTEMS AND METHODS FOR MULTI-RANK CQI COMPUTATION AND PRECODER SELECTION

  • US 20110243017A1
  • Filed: 04/05/2011
  • Published: 10/06/2011
  • Est. Priority Date: 04/05/2010
  • Status: Active Grant
First Claim
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1. A method for determining attributes of communication channels of multi-user (MU)-multiple input multiple output (MIMO) users in an orthogonal frequency division multiplexing based multiple access (OFDMA) system, the method comprising:

  • receiving from a base station, for at least one sub-band of contiguous sub-carriers, an indication of an estimate of or an upper-bound on a total number of streams (S) that are co-scheduled by the base station on the at least one sub-band;

    determining one or more signal quality measures for the at-least one sub-band based on the estimate of or the upper-bound on the total number of streams that are scheduled by the base station on the at least one sub-band; and

    transmitting to the base station an indication of the one or more signal quality measures.

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