Method and apparatus for transmitting and receiving channel state information in wireless communication system
US-2024429988-A1 · Dec 26, 2024 · US
Codebook based downlink multi-user interference alignment scheme
US8964871B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8964871-B2 |
| Application number | US-201313739420-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 11, 2013 |
| Priority date | May 14, 2012 |
| Publication date | Feb 24, 2015 |
| Grant date | Feb 24, 2015 |
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Abstract
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A method for operating a receiver having multiple receive antennas to process a signal from a first affiliated transmitter and align interference from a second interfering transmitter includes providing a codebook of predefined matrices. Each predefined matrix has an identifier associated therewith. A first channel matrix and a second channel matrix are assembled for the first and the second transmitters. An equivalent direct channel matrix is determined from the first and second channel matrices, and predetermined reference vectors are selected from a plurality of predetermined vectors. A predefined matrix is selected from the codebook based upon the equivalent direct channel matrix and an identifier for the predefined matrix is fed back to the first transmitter. A signal is received and decoded using a combining matrix derived from the predetermined reference vectors and an inverse of the second channel matrix, thereby reducing interference from the interfering transmitters.
First claim
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The invention claimed is: 1. In a wireless communication system comprising multiple transmitters each having multiple transmit antennas, a method for operating a receiver having multiple receive antennas to process a signal from a first affiliated transmitter and align interference from a second interfering transmitter, the method comprising: providing a codebook comprising predefined matrices in the receiver, each predefined matrix having an identifier associated therewith; ass…
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Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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- What does patent US8964871B2 cover?
- A method for operating a receiver having multiple receive antennas to process a signal from a first affiliated transmitter and align interference from a second interfering transmitter includes providing a codebook of predefined matrices. Each predefined matrix has an identifier associated therewith. A first channel matrix and a second channel matrix are assembled for the first and the second tr…
- Who is the assignee on this patent?
- Blackberry Ltd
- What technology area does this patent fall under?
- Primary CPC classification H04B7/0456. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 24 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).