发明名称 |
Channel status information feedback |
摘要 |
The present invention provides a method and system for channel status information feedback based on a hierarchical codebook, the method comprising steps of: generating a hierarchical codebook; configuring the generated hierarchical codebook to a transmit end and a receive end, respectively; and feeding back channel state information from the receive end to the transmit end based on the hierarchical codebook, wherein the step of generating a hierarchical codebook further comprises the following steps: i) dividing each level of codeword in a to-be-generated codebook into a plurality of segments based on a basic codebook; ii) a module configured to generate each level of codeword in a first stage, wherein the each level of codeword is selected from the basic codebook; and iii) generating each level of codeword in other stages, wherein the each level of codeword is selected a pre-provided training sample matrix. And the feeding back the channel status information from the receiving end to the transmitting end based on the hierarchical codebook further comprises using a first bit and a second bit of the feedback bits to represent a signaling for performing tree search to the hierarchical codebook. |
申请公布号 |
US8792571(B2) |
申请公布日期 |
2014.07.29 |
申请号 |
US201013639227 |
申请日期 |
2010.04.07 |
申请人 |
Alcatel Lucent |
发明人 |
Yang Hongwei;Lv Di |
分类号 |
H04L27/28 |
主分类号 |
H04L27/28 |
代理机构 |
Fay Sharpe LLP |
代理人 |
Fay Sharpe LLP |
主权项 |
1. A method of performing channel status information feedback in a communication system, comprising:
generating a hierarchical codebook; dividing each level of codeword in a to-be-generated codebook into a plurality of segments based on a basic codebook; generating each level of codeword in a first stage, wherein the each level of codeword in the first stage is selected from the basic codebook; generating each level of codeword in other stages, wherein the each level of codeword in the other stages is selected from a pre-provided training sample matrix; configuring the generated hierarchical codebook to a transmitting end and a receiving end, respectively; and feeding back the channel status information from the receiving end to the transmitting end based on the hierarchical codebook. |
地址 |
Boulogne-Billancourt FR |