发明名称 |
SPREAD SPECTRUM COMMUNICATION SYSTEM AND ITS CONSTITUENT DEVICE |
摘要 |
A spread spectrum communication system in which the data rate can be varied through a relatively simple constitution. A child radio device estimates the distance to the parent radio device by using the I and Q signals generated by carrier demodulation, selects the code of a code length associated with the estimated distance from the previously held codes, performs spreading/despreading using the same, and performs transmission/reception. The parent radio device performs spreading/despreading using a code having the same code length as that of the code selected by the child radio device. |
申请公布号 |
KR20070085531(A) |
申请公布日期 |
2007.08.27 |
申请号 |
KR20077012111 |
申请日期 |
2007.05.29 |
申请人 |
NIHON DEMPA KOGYO CO., LTD. |
发明人 |
SATO SHINICHI |
分类号 |
H04B1/707;H04B1/7073;H04J13/16;H04W4/04;H04W28/22;H04W72/04;H04W76/02 |
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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