An adaptive tone injection for OFDM PAPR reduction

IEICE Electronics Express

Mochan Yang¹  Yoan Shin¹ 

[1] School of Electronic Engineering, Soongsil University

关键词: orthogonal frequency division multiplexing;    peak-to-average power ratio;    tone injection;    clipping noise;   

DOI  :  10.1587/elex.8.1234

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(7)Cited-By(1)We propose an ATI (Adaptive Tone Injection) scheme based on clipping noises for PAPR (Peak-to-Average Power Ratio) reduction of OFDM (Orthogonal Frequency Division Multiplexing) signals. The proposed scheme is composed of three steps: clipping, tone selection, and TI procedures. In the first step, the peak samples in the inverse fast Fourier transform outputs are scaled down by the clipping. In the second step, two tone positions where the powers of the real and imaginary parts of the clipping noises are the maximum, are selected. Finally, the generic TI procedure is performed for the selected tones. Simulation results show that the proposed scheme significantly reduces the complexity of the original TI, while maintaining the PAPR reduction performance.

【 授权许可】

Unknown