发明申请
US20080051042A1 Adaptive predistortion for controlling an open loop power amplifier
审中-公开
用于控制开环功率放大器的自适应预失真
- 专利标题： Adaptive predistortion for controlling an open loop power amplifier
- 专利标题（中）： 用于控制开环功率放大器的自适应预失真
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申请号： US11510465申请日： 2006-08-25
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公开(公告)号： US20080051042A1公开(公告)日： 2008-02-28
- 发明人: Jaleh Komaili , John E. Vasa , Morten Damgaard , David S. Ripley
- 申请人： Jaleh Komaili , John E. Vasa , Morten Damgaard , David S. Ripley
- 主分类号： H04B1/04
- IPC分类号： H04B1/04
摘要：
An adaptive predistortion system for controlling an open loop power amplifier includes a transmitter, a receiver, a phase and amplitude determination element configured to determine amplitude and phase characteristics of an output signal generated in the transmitter, the signal representing transmitter characteristics, an amplitude resampling element configured to generate an updated AM-AM predistortion signal based on the output signal generated in the transmitter, and an amplitude predistortion element configured to compare the updated AM-AM predistortion signal with a factory-calibrated AM-AM predistortion signal and generate an amplitude compensation signal. The adaptive predistortion system also includes a phase comparison element configured to compare the signal representing transmitter characteristics with a desired phase signal, a phase resampling element configured to generate an updated AM-PM predistortion signal based on the output signal generated in the transmitter, and a phase predistortion element configured to compare the updated AM-PM predistortion signal with a factory-calibrated AM-PM predistortion signal and generate a phase compensation signal.