SYSTEM AND METHOD FOR CHANNEL STATE RELATED FEEDBACK IN MULTI-USER MULTIPLE-INPUT-MULTIPLE-OUTPUT SYSTEMS
First Claim
1. A method for dimension reduction, the method comprising:
- sending a matrix related to channel sounding to a beamformer, said matrix has a dimension that is smaller than a maximum dimension.
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Abstract
System and method for dimension reduction and for channel and interference condition feedback in a Multi-User Multiple-Input-Multiple-Output (MU MIMO) wireless communication systems. The method for dimension reduction includes determining a number of virtual antennas, vk, for beamformees pertaining to a multi user (MU) transmission group, reducing the dimension of said matrix by selecting a sub-set of antennas or by Eigen mode selection and sending a reduced dimension candidate transmit beamforming matrix or an effective channel matrix to a beamformer. The method for channel and interference condition feedback Interference condition includes sending to a beamformee metric indicative of the interference level from other streams.
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26 Claims
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1. A method for dimension reduction, the method comprising:
sending a matrix related to channel sounding to a beamformer, said matrix has a dimension that is smaller than a maximum dimension. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for dimension reduction, the method comprising:
determining a number of virtual antennas, vk, for beamformees pertaining to at least one multi user (MU) transmission groups. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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