发明名称 |
Optical transmission system for radio access and high frequency optical transmitter |
摘要 |
Modulators respectively modulate baseband signals into IF signals having different frequencies. Multiplexers multiplex the IF signals. A local oscillation signal source outputs a predetermined local oscillation signal. An external modulator intensity-modulates an optical signal using the local oscillation signal. An optical branching portion branches the intensity-modulated optical signal. Modulators respectively modulate the multiplexed IF signals onto the branched optical signals and then output the optical signals to radio base stations. Optical-electrical converters convert the optical signals into electric signals and antennas transmit the electrical signals to subscriber terminals.
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申请公布号 |
US7349634(B2) |
申请公布日期 |
2008.03.25 |
申请号 |
US20060600740 |
申请日期 |
2006.11.17 |
申请人 |
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发明人 |
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分类号 |
H04B10/00;H04B10/12;H04J14/00 |
主分类号 |
H04B10/00 |
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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