发明名称 |
System and method for generating signal waveforms in a CDMA cellular telephone system |
摘要 |
<p>1. A modulation system for use in spread spectrum communications, comprising: means for generating a first orthogonal sequence signal corresponding to a selected one of a plurality of orthogonal binary sequences; means for generating a pseudo-noise (PN) signal corresponding to a predetermined PN binary sequence; means for combining said first orthogonal sequence signal and said PN signal and for providing a resultant first modulation signal. 2. The system of 1 further comprising additional means for combining said first modulation signal with an input information signal and for providing a resultant spread spectrum information signal. 3. The system of 1 wherein said plurality of orthogonal binary sequences are Walsh sequences. 4. The system of 1 wherein said PN sequence is an augmented length maximal linear sequence PN code. <IMAGE></p> |
申请公布号 |
EP1450531(B1) |
申请公布日期 |
2007.08.15 |
申请号 |
EP20040012940 |
申请日期 |
1991.06.21 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
GILHOUSEN, KLEIN S.;WEAVER, LINDSAY A., JR.;JACOBS, IRWIN M. |
分类号 |
H04L27/30;H04B1/707;H04B1/7075;H04B1/709;H04B1/7115;H04B7/005;H04B7/26;H04J3/02;H04J3/16;H04J3/22;H04J11/00;H04J13/00;H04J13/10;H04J13/18;H04L;H04L1/00;H04L1/06;H04L1/08;H04L5/02;H04L5/12;H04L23/02;H04W52/26 |
主分类号 |
H04L27/30 |
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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