发明名称 |
Code division multiple access (CDMA) method and apparatus for protecting and authenticating wirelessly transmitted digital information |
摘要 |
A spread spectrum method and apparatus for protecting and authenticating wirelessly transmitted digital information using numerous techniques. The apparatus may be a wireless code division multiple access (CDMA) communication system, a base station, a wireless transmit/receive unit (WTRU), a transmitter, a receiver and/or an integrated circuit (IC). The wireless CDMA communication system includes a transmitter which steganographically embeds digital information in a CDMA communication signal and wirelessly transmits the CDMA communication signal. The system further includes a receiver which receives the CDMA communication signal and extracts the steganographically embedded digital information from the received CDMA communication signal. |
申请公布号 |
US7415043(B2) |
申请公布日期 |
2008.08.19 |
申请号 |
US20050034987 |
申请日期 |
2005.01.13 |
申请人 |
INTERDIGITAL TECHNOLOGY CORPORATION |
发明人 |
KAEWELL, JR. JOHN DAVID;CHITRAPU PRABHAKAR R.;OLESEN ROBERT LIND;SHIN SUNG-HYUK;HOFFMANN JOHN ERICH;REZNIK ALEXANDER |
分类号 |
H04J13/00;H04B7/216;H04B7/26;H04J11/00;H04L1/00;H04L1/06;H04L1/08;H04L1/18 |
主分类号 |
H04J13/00 |
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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