发明授权
US07835228B2 Modem and method for transmitting data in a medium notably such as air and water
有权
用于在诸如空气和水之类的介质中传输数据的调制解调器和方法
- 专利标题： Modem and method for transmitting data in a medium notably such as air and water
- 专利标题（中）： 用于在诸如空气和水之类的介质中传输数据的调制解调器和方法
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申请号： US12094982申请日： 2006-11-24
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公开(公告)号： US07835228B2公开(公告)日： 2010-11-16
- 发明人: Pierre-Andre Laurent
- 申请人： Pierre-Andre Laurent
- 申请人地址： FR
- 专利权人： Thales
- 当前专利权人： Thales
- 当前专利权人地址： FR
- 代理机构： Lowe Hauptman Ham & Berner, LLP
- 优先权： FR0511967 20051125
- 国际申请： PCT/EP2006/068892 WO 20061124
- 国际公布： WO2007/060221 WO 20070531
- 主分类号： H04B11/00
- IPC分类号： H04B11/00 ; H04L27/26
摘要：
A method for transmitting data is disclosed having the following steps: emitting packets of at least two types: pure data (long packets) and acknowledgments of receipt (acknowledgment) (short packets). Each packet is formed of three components: a—an acquisition preamble, (1) for presence detection and the joint determination of the initial values of the time shift and of the frequency shift, and b—the data proper, (2) and c—a set of unmodulated fixed carriers (3) making it possible to permanently estimate the frequency shift.
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