Back to results
US 8,798,212 B2Granted
Method and apparatus for processing feedback in a wireless communication system
AssigneeInterDigital Technology Corporation
InventorsKyle Jung-Lin Pan, Allan Yingming Tsai
Life of this patent
Estimating the term…
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.
Claims8
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.
3 more elements
A method for processing feedback implemented in a wireless transmit/receive unit (WTRU), the method comprising:
- 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.
4 more elements
Dependencies are inferred from the claim text.