发明名称 |
Code multiplexing wireless apparatus |
摘要 |
A code multiplexing wireless apparatus for amplifying a code-multiplexed signal and then transmitting the amplified signal includes the following to reduce output back-off, improve the efficiency of a power amplifier and suppress broadening of the frequency spectrum: (1) a code-multiplexed signal generator for multiplying each item of transmission data by a spreading code sequence and combining spread-spectrum modulated signals to generate a code-multiplexed signal, (2) a signal-peak suppressing unit for holding the envelope of the code-multiplexed signal below a set level, and (3) a power amplifier for amplifying the code-multiplexed signal and transmitting the amplified code-multiplexed signal from an antenna.
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申请公布号 |
US6009090(A) |
申请公布日期 |
1999.12.28 |
申请号 |
US19970872362 |
申请日期 |
1997.06.10 |
申请人 |
FUJITSU LIMITED |
发明人 |
OISHI, YASUYUKI;NAGATANI, KAZUO;FUKUMASA, HIDENOBU;HAMADA, HAJIME;ASANO, YOSHIHIKO |
分类号 |
H04J11/00;H04B1/707;H04J13/04;(IPC1-7):H04B7/216;H04B15/00 |
主分类号 |
H04J11/00 |
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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