Method and apparatus for processing feedback in a wireless communication system
First Claim
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1. A method for processing feedback implemented in a wireless transmit/receive unit (WTRU), the method comprising:
- estimating a channel matrix;
calculating an effective channel;
selecting a precoding matrix from a set of precoding matrices, the set of precoding matrices being constructed using a discrete Fourier transform (DFT) matrix multiplied with at least two different phase shifts;
generating feedback bits by the WTRU; and
transmitting the feedback bits by the WTRU.
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Abstract
A method and apparatus for processing feedback implemented in a wireless transmit/receive unit (WTRU) comprises estimating a channel matrix. The effective channel is calculated and a precoding matrix is selected. Feedback bits are generated and transmitted.
16 Citations
8 Claims
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1. A method for processing feedback implemented in a wireless transmit/receive unit (WTRU), the method comprising:
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estimating a channel matrix; calculating an effective channel; selecting a precoding matrix from a set of precoding matrices, the set of precoding matrices being constructed using a discrete Fourier transform (DFT) matrix multiplied with at least two different phase shifts; generating feedback bits by the WTRU; and transmitting the feedback bits by the WTRU. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for processing feedback implemented in a wireless transmit/receive unit (WTRU), the method comprising:
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constructing a set of precoding matrices using a discrete Fourier transform (DFT) matrix multiplied with at least two different phase shifts; selecting a precoding matrix from the set of precoding matrices; computing a differential precoding matrix or delta matrix from the selected precoding matrix; quantizing the differential precoding matrix or delta matrix; generating feedback bits from the quantized differential precoding matrix or delta matrix by the WTRU; and transmitting the feedback bits by the WTRU. - View Dependent Claims (8)
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Specification