发明申请
- 专利标题： Method to increase performance of secondary data in a hierarchical modulation scheme
- 专利标题（中）： 提高分层调制方案中二次数据性能的方法
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申请号： US10847944申请日： 2004-05-18
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公开(公告)号： US20050111579A1公开(公告)日： 2005-05-26
- 发明人: Glenn Walker , Eric Dibiaso , Michael Hiatt
- 申请人： Glenn Walker , Eric Dibiaso , Michael Hiatt
- 主分类号： H04B7/185
- IPC分类号： H04B7/185 ; H04L27/34 ; H04L27/20
摘要：
The present invention provides a receiver for use in a SDAR system, the receiver including a receiving unit having satellite signal detection means for detecting a first transmit signal transmitted from a first communication satellite and a second transmit signal transmitted from a second communication satellite, the first transmit signal produced when the transmitter modulates a primary data stream with a secondary data stream on a first carrier wave associated with the first communication satellite and the second transmit signal produced when the transmitter modulates the primary and secondary data streams on a second carrier wave associated with the second communication satellite; and at least one demodulator coupled to the receiving unit and configured to demodulate the at least one of the first and the second transmit signals.