Invention Application
WO2008155610A2 POWER AMPLIFIER TIME-DELAY INVARIANT PREDISTORTION METHODS AND APPARATUS
审中-公开
功率放大器时间延迟不确定性预测方法和设备
- Patent Title: POWER AMPLIFIER TIME-DELAY INVARIANT PREDISTORTION METHODS AND APPARATUS
- Patent Title (中): 功率放大器时间延迟不确定性预测方法和设备
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Application No.: PCT/IB2008/000996Application Date: 2008-01-28
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Publication No.: WO2008155610A2Publication Date: 2008-12-24
- Inventor: YANG, Dali , YANG, Jia
- Applicant: DALI SYSTEMS CO., LTD. , YANG, Dali , YANG, Jia
- Applicant Address: P.o. Box 309GT, Ugland House M & C Corporate Services George Town Grand Cayman Cayman Island KY
- Assignee: DALI SYSTEMS CO., LTD.,YANG, Dali,YANG, Jia
- Current Assignee: DALI SYSTEMS CO., LTD.,YANG, Dali,YANG, Jia
- Current Assignee Address: P.o. Box 309GT, Ugland House M & C Corporate Services George Town Grand Cayman Cayman Island KY
- Agency: CCPIT PATENT AND TRADEMARK LAW OFFICE
- Priority: US60/897,746 20070126; US60/898,312 20070129
- Main IPC: H03G1/04
- IPC: H03G1/04
Abstract:
An embodiment of the invention is a time-delay invariant predistortion approach to linearize power amplifiers in wireless RF transmitters. The predistortion architecture is based on the stored-compensation or memory-compensation principle by using a combined time-delay addressing method, and therefore, the architecture has an intrinsic, self-calibrating time-delay compensation function. The predistortion architecture only uses a lookup table to conduct both the correction of non-linear responses of a power amplifier and the compensation of any time-delay effects presented in the same system. Due to the time-delay invariant characteristic, the predistortion design has a wider dynamic range processing advantage for wireless RF signals, and therefore can be implemented in multi-carrier and multi-channel wireless systems.
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