发明名称 |
Apparatus and method for performing fast acquisition of PN sequences by transferring distributed samples |
摘要 |
This invention is to provide an apparatus and method for performing fast distributed sample acquisition (DSA) which is applicable to DS/CDMA system with a long-period PN sequence. The apparatus includes a spreader which generates a data signal by spreading an incoming data stream over a predetermined range of spectrum according to a locally generated first main sequence and samples the state sample of said main sequence, a sample spreader which makes the state sample output from a spreader corresponding to one of binary orthogonal symbols having a predetermined length and outputs a first state signal by spreading the symbol according to a locally generated first subsequence, a sample despreader which reconstructs the transmitted binary orthogonal symbols by despreading the first state signal obtained from the sample spreader according to a locally generated second subsequence and therefrom detects the state sample of the first main sequence, and a despreader which compares the state sample obtained from the sample despreader with a locally generated state sample and makes correction on the SRG installed within itself as many as a predetermined number of times, generates a second main sequence having new states, and reconstructs the incoming data stream by despreading the data signal obtained from the spreader according to the second main sequence.
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申请公布号 |
US6389058(B1) |
申请公布日期 |
2002.05.14 |
申请号 |
US19980045943 |
申请日期 |
1998.03.23 |
申请人 |
LG INFORMATION & COMMUNICATIONS, LTD. |
发明人 |
LEE BYOUNG-GI;KIM BYOUNG-HOON |
分类号 |
H04B1/69;H04B1/707;(IPC1-7):H04B1/69 |
主分类号 |
H04B1/69 |
代理机构 |
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主权项 |
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地址 |
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