Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 1998.10a
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- Pages.211-214
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- 1998
Digital Pre-distorter for Communication Transmitters
통신용 송신기의 디지털 Pre-distorter
Abstract
The high power amplifier (HPA) for broadcasting transmitter systems has nonlinear property in terms of input signal power. Hence, it produces AM/AM and AM/PM modulation to the modulated signal. Therefore, the non-linearity results in bandwidth expansion and nonlinear distortion to in-band signal. In this paper, we propose a simple sain-based predistorter that requires less computational burden and less time for the full initialization of the pre-distorter ROM table.
Keywords