Method and apparatus for pre-coding frequency division duplexing system
First Claim
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1. An apparatus operable in a wireless communication system, the apparatus comprising:
- means for determining a rank value;
means for determining a matrix index, wherein said matrix index denotes a pre-coding matrix used for eigen-beamforming; and
means for transmitting a reverse link message comprising said matrix index and said rank value.
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Abstract
Accordingly, a method and apparatus are provided wherein a receiver system selects a pre-coding matrix, comprising eigen-beamforming weights, to use and provides rank value and matrix index associated with the selected matrix to the transmitter system. The transmitter system upon receiving the rank value and matrix index, determine if the matrix associated with the matrix index provided by the receiver system can be used. If not, them transmitter system selects another matrix for determining eigen-beamforming weights.
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Citations
29 Claims
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1. An apparatus operable in a wireless communication system, the apparatus comprising:
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means for determining a rank value; means for determining a matrix index, wherein said matrix index denotes a pre-coding matrix used for eigen-beamforming; and means for transmitting a reverse link message comprising said matrix index and said rank value. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus operable in a wireless communication system, the apparatus comprising:
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a processor configured for receiving a rank value and a matrix index, wherein said matrix index denotes the pre-coding matrix used for eigen-beamforming; extracting said pre-coding matrix comprising eigen-beamforming weight values using said rank value and said matrix index; and determining if said extracted pre-coding matrix should be used. - View Dependent Claims (8, 9, 10)
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11. A method of pre-coding in a MIMO communication system, the method comprising:
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determining a rank value; determining a matrix index, wherein said matrix index denotes a pre-coding matrix used for eigen-beamforming; and using a transmitter for transmitting a reverse link message comprising said matrix index and said rank value. - View Dependent Claims (12, 13, 14, 15, 16)
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17. The method of pre-coding in a wireless communication system, the method comprising:
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using a receiver for receiving a rank value and a matrix index, wherein said matrix index denotes a pre-coding matrix used for eigen-beamforming; extracting said pre-coding matrix comprising eigen-beamforming weight values using said rank value and said matrix index; and determining if said extracted pre-coding matrix should be used. - View Dependent Claims (18, 19, 20)
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21. In a MIMO communication system, an apparatus comprising:
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a processor, said processor configured to determine a rank value; said processor further configured to determine a matrix index, wherein said matrix index denotes a pre-coding matrix used for eigen-beamforming; and said processor further configured to transmit a reverse link message comprising said matrix index and said rank value. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A non-transitory processor-readable medium comprising instructions which, when executed by a processor, cause the processor to perform operations including:
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determining a rank value; determining a matrix index, wherein said matrix index denotes a pre-coding matrix used for eigen-beamforming; and transmitting a reverse link message comprising said matrix index and said rank value. - View Dependent Claims (28, 29)
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Specification