发明名称 |
SPECTRUM SPREADING COMMUNICATION DEVICE AND COMMUNICATION SYSTEM |
摘要 |
A structure of a novel spectrum spreading communication device which solves the problem with the conventional spectrum spreading communication using Barker codes, etc., and limits the rise of the side-lobe of a correlational signal independently of the order of information codes by use of a code sequence having a code length of at least 14. The spectrum spreading communication device uses a pseudo-noise code having a code length of at least 14 and a self-correlation side-lobe of not greater than 3 as a pseudo-noise code of a direct spreading communication device which uses the pseudo-noise codes whose polarities are inverted so as to deal with also digital information. Thus, even when the pseudo-noise code length is 14 or more, the side-lobe of the correlation coefficient can be restricted. Accordingly, the error rate of the spectrum spreading communication device is reduced and the processing gain is improved. |
申请公布号 |
WO9624198(A1) |
申请公布日期 |
1996.08.08 |
申请号 |
WO1995JP00129 |
申请日期 |
1995.02.01 |
申请人 |
HITACHI, LTD.;SHIBA, TAKASHI;YUHARA, AKITSUNA;YAMADA, YOSHIHIRO;OTA, YASUHIRO |
发明人 |
SHIBA, TAKASHI;YUHARA, AKITSUNA;YAMADA, YOSHIHIRO;OTA, YASUHIRO |
分类号 |
H04B1/707;H04B1/7093;H04J13/16 |
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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