发明名称 |
Radio equipment capable of real time change of antenna directivity and doppler frequency estimating circuit used for the radio equipment |
摘要 |
A radio equipment separates a signal from a specific terminal among signals from adaptive array antennas, based on a reception weight vector calculated by a reception weight vector calculator. A reception response vector calculator draws out a reception response vector of a propagation path of the signal from the specific terminal. A correlation operation and Doppler frequency estimating circuit calculates a correlation value between reception response vectors of corresponding slots of continuous frames, and estimates a corresponding Doppler frequency based on a correspondence found in advance. A transmission response vector estimator predicts a transmission response vector, by performing an extrapolation process in accordance with the estimated Doppler frequency.
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申请公布号 |
US2002032015(A1) |
申请公布日期 |
2002.03.14 |
申请号 |
US20010911823 |
申请日期 |
2001.07.25 |
申请人 |
SANYO ELECTRIC CO., LTD. |
发明人 |
KITAKADO JUN;DOI YOSHIHARU |
分类号 |
H04B7/26;H04B7/01;H04B7/06;H04B7/08;(IPC1-7):H04B1/06 |
主分类号 |
H04B7/26 |
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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