发明授权
- 专利标题： Gray encoding for hierarchical QAM transmission systems
- 专利标题（中）： 灰度编码用于分级QAM传输系统
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申请号： US10148223申请日： 2000-11-22
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公开(公告)号： US07079585B1公开(公告)日： 2006-07-18
- 发明人: Timothy Forrest Settle , Thomas Peter Krauss , Kumar Ramaswamy
- 申请人： Timothy Forrest Settle , Thomas Peter Krauss , Kumar Ramaswamy
- 申请人地址： FR Boulogne-Billancourt
- 专利权人： Thomson Licensing
- 当前专利权人： Thomson Licensing
- 当前专利权人地址： FR Boulogne-Billancourt
- 代理商 Joseph J. Laks; Ronald H. Kurdyla
- 国际申请： PCT/US00/32011 WO 20001122
- 国际公布： WO01/39456 WO 20010531
- 主分类号： H04L23/02
- IPC分类号： H04L23/02 ; H04L27/36
摘要：
A hierarchical QAM system allows the transmission of different sources by embedding the relative constellation points. At the transmitter the constellations generated by the different sources are remapped by a grey coder and then combined. At the receiver, the different source data are decoded by using a corresponding grey code demapper.
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