대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)
- 대한전자공학회 2000년도 하계종합학술대회 논문집(1)
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- Pages.256-259
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- 2000
OFDM시스템에서 비선형 왜곡 보상을 위한 기저대역 사전왜곡기의 VHDL 구현
A VHDL Implementation of Baseband Predistorter for the Compensation of Nonlinear Distortion in OFDM Systems
초록
The OFDM (orthogonal frequency division multiplexing) systems are based en the transmission of a given set of signals on multiple orthogonal subcarriers, resulting in large variation in amplitude of transmit signals, and severe distortion by nonlinear characteristic of a high power amplifier (HPA) is unavoidable. We propose in this paper a computationally efficient structure of a baseband predistorter for compensation of nonlinear distortion by the HPA. Moreover, a predistorter which can be utilized in high speed transmission systems such as wireless ATM based on the proposed structure is designed using VHDL, and synthesized by the Synopsys tool.
키워드