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公开(公告)号：US11082013B2
公开(公告)日：2021-08-03
申请号：US15975783
申请日：2018-05-10
Applicant: MEDIATEK INC.
Inventor： Ching-Shyang Maa , Chun-Hsien Peng , Hua-Lung Yang , I-No Liao , Chen-Jui Hsu , Jen-Yang Liu
Abstract: A method of reducing memory effect of a power amplifier (PA), for a look-up table (LUT) based memory digital pre-distortion (DPD) circuit of an electronic device is disclosed. The method comprises generating a pre-distorted signal according to a LUT including parameters of an input signal amplitude and an input signal delay associated with a bandwidth of a signal inputted to the memory DPD circuit, and outputting the pre-distorted signal to the PA for improving the nonlinearity of the PA.
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公开(公告)号：US20170214370A1
公开(公告)日：2017-07-27
申请号：US15374992
申请日：2016-12-09
Applicant: MediaTek Inc.
Inventor： Po-Sen Tseng , Wei-Kai Chang , I-No Liao , Tzyuan Shiu , Hsin-Hung Chen , Caiyi Wang
CPC classification number: H03F1/3247 , H03F1/0222 , H03F1/025 , H03F1/0255 , H03F1/3282 , H03F3/189 , H03F3/245 , H04B1/04 , H04B2001/0425 , H04L27/2614 , H04W52/365
Abstract: According to at least one aspect, a communication system is provided. The communication system includes a power amplifier configured to amplify an input signal to generate an amplified output signal and provide the amplified output signal to an antenna, a power supply coupled to the power amplifier and configured to provide power to the power amplifier based on a power supply control signal, and a controller coupled to the power supply. The controller is configured to identify a target transmit power level for transmission of a wireless signal, generate the power supply control signal based on the target transmit power level using information indicative of a relationship between the target transmit power level and a setting of the power supply, generate performance information indicative of a characteristic of the communication system when the wireless signal is transmitted, and update the information indicative of the relationship using the performance information.
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公开(公告)号：US20180331662A1
公开(公告)日：2018-11-15
申请号：US15975783
申请日：2018-05-10
Applicant: MEDIATEK INC.
Inventor： Ching-Shyang Maa , Chun-Hsien Peng , Hua-Lung Yang , I-No Liao , Chen-Jui Hsu , Jen-Yang Liu
CPC classification number: H03F1/3258 , H03F1/30 , H03F3/19 , H03F3/21 , H03F2200/451 , H03F2200/468 , H03F2201/3209 , H03F2201/3224 , H03F2201/3233
Abstract: A method of reducing memory effect of a power amplifier (PA), for a look-up table (LUT) based memory digital pre-distortion (DPD) circuit of an electronic device is disclosed. The method comprises generating a pre-distorted signal according to a LUT including parameters of an input signal amplitude and an input signal delay associated with a bandwidth of a signal inputted to the memory DPD circuit, and outputting the pre-distorted signal to the PA for improving the nonlinearity of the PA.
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公开(公告)号：US09985590B2
公开(公告)日：2018-05-29
申请号：US15374992
申请日：2016-12-09
Applicant: MediaTek Inc.
Inventor： Po-Sen Tseng , Wei-Kai Chang , I-No Liao , Tzyuan Shiu , Hsin-Hung Chen , Caiyi Wang
CPC classification number: H03F1/3247 , H03F1/0222 , H03F1/025 , H03F1/0255 , H03F1/3282 , H03F3/189 , H03F3/245 , H04B1/04 , H04B2001/0425 , H04L27/2614 , H04W52/365
Abstract: According to at least one aspect, a communication system is provided. The communication system includes a power amplifier configured to amplify an input signal to generate an amplified output signal and provide the amplified output signal to an antenna, a power supply coupled to the power amplifier and configured to provide power to the power amplifier based on a power supply control signal, and a controller coupled to the power supply. The controller is configured to identify a target transmit power level for transmission of a wireless signal, generate the power supply control signal based on the target transmit power level using information indicative of a relationship between the target transmit power level and a setting of the power supply, generate performance information indicative of a characteristic of the communication system when the wireless signal is transmitted, and update the information indicative of the relationship using the performance information.
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