发明名称 |
CHANNEL ESTIMATION BY ADAPTIVE INTERPOLATION |
摘要 |
Methods and apparatus that achieve good channel estimation without using unnecessarily complex interpolation filters are described. Adaptive interpolation filtering of a signal in a receiver includes determining at least one correlation function parameter of the channel and determining a filter configuration based on the correlation function parameter. The interpolation may be performed in time, where a Doppler frequency shift can serve as the correlation function parameter, or in frequency, where a root mean square or maximum delay spread can serve as the correlation function parameter, or both. A worst case signal-to-noise ratio may be used in determining the filter configuration, or, optionally, the signal-to-noise ratio can be determined in real time. The filter configuration can be determined in real time or selected from one of a plurality of predetermined configurations having different complexities. |
申请公布号 |
WO2005048546(A3) |
申请公布日期 |
2005.08.11 |
申请号 |
WO2004EP12797 |
申请日期 |
2004.11.11 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL);WILHELMSSON, LEIF;ANDERSSON, LENNART;BERNHARDSSON, BO |
发明人 |
WILHELMSSON, LEIF;ANDERSSON, LENNART;BERNHARDSSON, BO |
分类号 |
H04L25/02;H04L27/26 |
主分类号 |
H04L25/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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