发明名称 |
Receiving apparatus for spectrum spread system |
摘要 |
A spectrum spread receiver is provided with a delayed waveform phase determination circuit which determines whether or not a detected delayed waveform is in the phase as the previously-detected delayed waveform, and outputs a delayed waveform switch signal if they are out of phase with each other. If the delayed waveform switch signal is in an ON state, on the basis of the signal despread by a second despreading circuit 7 and the delayed waveform switch signal, a demodulation circuit 9 demodulates the first half and second half of a received signal, as a boundary is a received signal at which a delayed waveform switch signal is turned on, by using the phase estimated from a first known signal and the phase estimated from a second known signal, thereby preventing the received signal from becoming degraded.
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申请公布号 |
US5822364(A) |
申请公布日期 |
1998.10.13 |
申请号 |
US19970824833 |
申请日期 |
1997.03.26 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
YAMADA, DAISUKE;TAKAKUSAKI, KEIJI |
分类号 |
H04B1/707;(IPC1-7):H04J13/00 |
主分类号 |
H04B1/707 |
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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