发明名称 |
RECEIVER PARAMETRIC COVARIANCE ESTIMATION FOR TRANSMIT DIVERSITY |
摘要 |
<p>A parametric form of G-Rake and chip equalization for closed-loop transmit diversity is provided, that accounts for impairment correlation between transmit antennas. In a closed-loop transmit diversity system, the base station transmits a signal from two or more antennas, using one of a predetermined set of relative phase offsets at one of the antennas. The parametric estimation of the impairment or data covariance is performed by summing terms, including a term for each possible phase offset. The terms are weighted by fitting parameters. The fitting parameters are jointly solved by fitting the impairment or data covariance estimate to a measured impairment or data covariance. In another aspect, a measured impairment covariance is formed by exploiting a special relationship between the pilot channels of the different transmit antennas.</p> |
申请公布号 |
EP2151070(A1) |
申请公布日期 |
2010.02.10 |
申请号 |
EP20080759586 |
申请日期 |
2008.05.14 |
申请人 |
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) |
发明人 |
JONSSON, ELIAS;WANG, YI-PIN, ERIC;BOTTOMLEY, GREGORY, E;GRANT, STEPHEN |
分类号 |
H04B1/712;H04B7/06 |
主分类号 |
H04B1/712 |
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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