发明名称 |
Radio base system, transmission directional control method, and transmission directional control program |
摘要 |
A radio unit (2000) separates a signal from a specific terminal among signals from array antennas (#1-#4) based on a reception weight vector calculated by a reception weight vector calculator (20). A reception response vector calculator (22) derives a reception response vector of a propagation path for the signal from the specific terminal. A transmission response vector estimator (40) regards an estimation result of the reception response vector calculator (22) as a composite waveform of a function of a plurality of frequencies, determined in accordance with a Doppler frequency, and predicts a transmission response vector at a time point of transmission by obtaining coefficients of respective function. A transmission weight vector calculator (30) controls antenna directivity in transmission, based on a prediction result of the transmission response vector estimator (40).
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申请公布号 |
US2004176136(A1) |
申请公布日期 |
2004.09.09 |
申请号 |
US20040483529 |
申请日期 |
2004.01.12 |
申请人 |
DOI YOSHIHARU;OGAWA YASUTAKA;OHGANE TAKEO |
发明人 |
DOI YOSHIHARU;OGAWA YASUTAKA;OHGANE TAKEO |
分类号 |
H01Q3/26;H04B7/00;H04B7/06;H04B7/08;H04B7/10;H04B7/26;H04J3/00;H04J99/00;(IPC1-7):H04Q7/20 |
主分类号 |
H01Q3/26 |
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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