发明申请
- 专利标题: CHANNEL ESTIMATION BASED ON MIDAMBLE
- 专利标题(中): 基于MIDAMBLE的信道估计
-
申请号: US13175279申请日: 2011-07-01
-
公开(公告)号: US20120069753A1公开(公告)日: 2012-03-22
- 发明人: Hari Sankar , Wenjun Li , Farrokh Abrishamkar , Srikanth Gummadi
- 申请人: Hari Sankar , Wenjun Li , Farrokh Abrishamkar , Srikanth Gummadi
- 申请人地址: US CA San Diego
- 专利权人: QUALCOMM Incorporated
- 当前专利权人: QUALCOMM Incorporated
- 当前专利权人地址: US CA San Diego
- 主分类号: H04W24/00
- IPC分类号: H04W24/00
摘要:
Channel estimation at a user equipment includes estimating channel quality of at least one channel. A first algorithm or a second algorithm is selected based on the estimated channel quality. Channel estimation is performed based on the selected algorithm. The first algorithm may be a midamble multiplication-based algorithm. The second algorithm may be a midamble division algorithm. Channel estimation may also include estimating noise of a channel and adaptively setting a threshold based on the estimated noise to refine the channel estimation. The estimating channel quality, selecting of a first or second algorithm and channel estimation may be performed iteratively for contributing signals on a channel. An adaptive threshold may be modified across iterations. The channel estimation may also include determining a delay profile of a channel to refine the channel estimation.