Samsung Electronics Co., Ltd.

Seung-Il Jeong

Byung-Ki Kim

Byung-Wook Kim

A predistortion apparatus of a Digital Pre-Distortion (DPD) power amplifier in a wireless communication system is provided. A method for predistorting an input signal at the predistortion apparatus of the DPD power amplifier includes dividing one or more bits constituting the input signal into upper bits and lower bits; generating two successive address values using the upper bits; generating distortion values of the upper bits corresponding to the address values; calculating a distortion value of the lower bits; and calculating a distortion signal value corresponding to the input signal using the distortion values of the upper bits and the distortion bit of the lower bits. Hence, the time taken to update the LUT can be shortened, the cost can be lowered by the reduced memory capacity, and the power consumption can be decreased.

Method and apparatus for distorting input signal of digital predistortion (DPD) power amplifier in wireless communication system

An apparatus and method for digital up converting in a mobile communication system are provided. The apparatus includes a Selectable Input Logic (SIL), a Scalable Clock Distribution Logic (SCDL), a filter logic, and a mixer logic. The SIL performs decimation at a decimation rate. The SCDL controls a clock frequency. The filter logic performs channel filtering for the decimated signal, and performs interpolation at an interpolation rate variable. The mixer logic up-converts the signal provided from the filter logic.

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Yongin-si, South Korea

Seung-Il Jeong