基于OFDM信号概率分布的功放查找表预失真技术

With its strong ability of suppressing multipath fading and high spectral efficiency, OFDM technique has attracted wide attention in wireless communications development process, and has been widely used in the third Generation and the fourth Generation communication systems. As the amplitude of the OFDM signal has a constant probability distribution, this paper proposes a new LUT-based digital pre-distortion technique, combining traditional look-up-table-based pre-distortion technology with the statistical properties of amplitude of OFDM signal. Finally, simulation results show the feasibility and effectiveness of the new method, and further points out that better distribution of pre-distortion algorithm for better performance.