COMMUNICATION APPRATUS FOR SUPPORTING ENVELOPE TRACKING MODULATION AND ENVELOPE DELAY OPTIMIZATION METHOD

• Main Authors: YEON HAE-DONG, CHOI HONG-MIN, NOH HEE-SANG, LEE JUN-SE, BAEK CHANG-HYUN
• Format: Patent
• Language: Chinese; English
• Published: 11.01.2022
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION; WIRELESS COMMUNICATIONS NETWORKS

The invention provides a communication appratus for supporting envelope tracking modulation and an envelope delay optimization method. A method includes estimating adjacent channel leakage ratios respectively corresponding based on a test output signal output from a power amplifier according to a test input signal corresponding to a plurality of frequencies; selecting a test delay value corresponding to the largest value among the estimated adjacent channel leakage ratios; and providing a supply voltage to the power amplifier based on an envelope signal delayed according to the selected test delay value. For each of the plurality of test delay values, a corresponding adjacent channel leakage ratio is estimated based on a ratio of a magnitude of a component included in the test output signal and a magnitude of an inter-modulated component. 提供一种支持包络跟踪调制的通信设备和包络延迟优化方法。所述方法包括：根据与多个频率相应的测试输入信号，基于从功率放大器输出的测试输出信号来估计分别与多个测试延迟值相应的相邻信道泄漏比；选择与估计的相邻信道泄漏比中的最大值相应的测试延迟值；并且基于根据选择的测试延迟值延迟的包络信号向功率放大器提供电源电压。针对所述多个测试延迟值中的每个测试延迟值