发明名称 |
Spread spectrum communication system |
摘要 |
A convolutional coding unit generates transmission data by performing an error correcting code process for sending data. A mapping unit arranges the transmission data at signal points corresponding to the data value. A PN sequence generating unit generates a PN sequence based on part of the transmission data. A spreading unit spreads a transmission signal by multiplying an output of the mapping unit by the PN sequence generated with the PN sequence generating unit. A despreading unit detects the PN sequence used on a transmitting side, and despreads the received signal by using the detected PN sequence. A remapping unit obtains the transmission data from the signal points at which the received signal is arranged. A supplementary information processing unit obtains supplementary information based on the detected PN sequence. A Viterbi decoding unit regenerates the sending data from the transmission data by using the supplementary information.
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申请公布号 |
US6009117(A) |
申请公布日期 |
1999.12.28 |
申请号 |
US19970931643 |
申请日期 |
1997.09.16 |
申请人 |
KABUSHIKI KAISHA TOYODA JIDOSHOKKI SEISAKUSHO |
发明人 |
YAMAMURA, HIDEYA |
分类号 |
H04B1/707;H04L1/00;H04L27/34;(IPC1-7):H04B15/00;H04K1/00;H04L27/30 |
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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