发明授权
- 专利标题: Method and apparatus for communication channel estimation
- 专利标题(中): 通信信道估计方法和装置
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申请号: US11438874申请日: 2006-05-23
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公开(公告)号: US07680218B2公开(公告)日: 2010-03-16
- 发明人: Leif Wilhelmsson , Bo Bernhardsson , Per-Ola Larsson
- 申请人: Leif Wilhelmsson , Bo Bernhardsson , Per-Ola Larsson
- 申请人地址: SE Stockholm
- 专利权人: Telefonaktiebolaget LM Ericsson (publ)
- 当前专利权人: Telefonaktiebolaget LM Ericsson (publ)
- 当前专利权人地址: SE Stockholm
- 代理机构: Coats & Bennett, P.L.L.C.
- 主分类号: H04L27/06
- IPC分类号: H04L27/06 ; H04W4/00
摘要:
A method and apparatus for predicting channel estimates for non-received signal frequencies provides knowledge of propagation channel characteristics for non-received frequencies. One embodiment predicts uplink (or downlink) channel estimates based on measured downlink (or uplink) channel estimates, which is advantageous in systems having different uplink and downlink frequencies. Another embodiment predicts channel responses for non-received OFDM sub carrier frequencies based on measuring channel responses for received OFDM sub carrier frequencies. Such processing may comprise, for example, measuring channel responses for received OFDM pilot sub carriers, predicting channel responses at frequency intervals corresponding to pilot sub carrier spacing, and interpolating between those values to predict channel responses at data sub carrier frequencies.
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