In this letter, a novel discrete Fourier transform (DFT)-based scheme is proposed for peak to average power ratio (PAPR) reduction in filter-bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) systems. The key idea is the combination of DFT and the concept of block repetition. Different from the conventional DFT-based PAPR reduction method, the output complex-valued signal of the DFT module is directly transmitted in the proposed DFT-based PAPR reduction method, instead of separating and transmitting the real and imaginary parts of the output signal, respectively. The proposed method can provide a solution to the low PAPR without the cost of high complexity, signal distortion or side information. To validate the performance of the proposed method, simulation results are provided in terms of complementary cumulative distribution function (CCDF) and bit error ratio (BER).

中文翻译：

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在 FBMC/OQAM 系统中降低 PAPR 的新型基于 DFT 的方案

在这封信中，提出了一种新的基于离散傅立叶变换 (DFT) 的方案，用于在具有偏移正交幅度调制 (FBMC/OQAM) 系统的滤波器组多载波中降低峰均功率比 (PAPR)。关键思想是DFT和块重复概念的结合。与传统的基于DFT的PAPR降低方法不同，DFT模块的输出复值信号在提出的基于DFT的PAPR降低方法中直接传输，而不是将输出信号的实部和虚部分别分离和传输. 所提出的方法可以为低PAPR提供解决方案，而无需以高复杂度、信号失真或边信息为代价。为了验证所提出方法的性能，