- 专利标题: Amplitude and phase matching for layered modulation reception
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申请号: US10532524申请日: 2003-10-03
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公开(公告)号: US20060018406A1公开(公告)日: 2006-01-26
- 发明人: Ernest Chen , Jeng-Hong Chen , Kenneth Shum , Joungheon Oh
- 申请人: Ernest Chen , Jeng-Hong Chen , Kenneth Shum , Joungheon Oh
- 申请人地址: US CA El Segundo
- 专利权人: The DIRECTV Group, Inc.
- 当前专利权人: The DIRECTV Group, Inc.
- 当前专利权人地址: US CA El Segundo
- 国际申请: PCT/US03/31199 WO 20031003
- 主分类号: H03K9/00
- IPC分类号: H03K9/00
摘要:
An apparatus and method for receiving layered modulation signals is disclosed. A typical method includes receiving a layered modulation signal including an upper layer signal and a lower layer signal, demodulating and decoding the upper layer signal from the received layered modulation signal, estimating an upper layer amplitude factor and an upper layer phase factor from the received layered modulation signal. A substantially ideal upper layer signal is reconstructed from the demodulated and decoded upper layer signal including matching an ideal amplitude and an ideal phase by applying the upper layer amplitude factor and the upper layer phase factor to the reconstructed ideal upper layer signal. Finally, the reconstructed ideal upper layer signal is subtracted from the received layered modulation signal to produce the lower layer signal for processing.