Mediatek Corporation

I-No Liao

Hsin-Hung Chen

Caiyi Wang

Chun-Hsien Peng

Po-Sen Tseng

Tzyuan Shiu

Ching-Shyang Maa

Chen-Jui Hsu

Jen-Yang Liu

Wei-Kai Chang

Hua-Lung Yang

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.

Method of reducing memory effect of power amplifier

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.

Adaptive power amplifier supply with pre-distortion mechanism

Growing community of inventors

Hsinchu County, Taiwan

I-No Liao