发明名称 |
Initial synchronization DS-CDMA asynchronous cellular system |
摘要 |
Cells are searched at a high speed using an initial synchronization method and a receiver for a DS-CDMA inter base station asynchronous cellular system. A base band received signal is input to a matched filter 1 and is correlated with a spread code supplied from a spread code generator 2. A signal electric power calculator 3 calculates the electric power of the correlation output of the matched filter 1, and outputs the result to a long code synchronization timing determiner 4, a threshold value calculator 5, and a long code identifier 6. During the initial cell search, the spread code generator 2 outputs a short code #0 that is common to the control channel of each of the base stations. After the long code synchronization timing has been determined, each of the segments of the N chips which constitutes a portion of the synthesized spread code sequence synthesized from a long code #i that is unique to each of the base stations and the short code #0 is sequentially replaced and output. <IMAGE> |
申请公布号 |
EP0852430(A3) |
申请公布日期 |
2003.04.16 |
申请号 |
EP19980100081 |
申请日期 |
1998.01.05 |
申请人 |
YOZAN INC. |
发明人 |
SHOU, GUOLIANG;ZHOU, CHANGMING;ZHOU, XUPING |
分类号 |
H04B1/707;H04B1/7075;H04B7/26;H04W56/00;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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