Peak-to-Average Power Ratio Reduction of FBMC/OQAM Signal Using a Joint Optimization Scheme
Peak-to-Average Power Ratio Reduction of FBMC/OQAM Signal Using a Joint Optimization Scheme
复制标题
使用联合优化方案降低 FBMC/OQAM 信号的峰均功率比
DOI：
10.1109/access.2017.2700078
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发表时间：
2017
期刊：
影响因子：
3.9
通讯作者：
Yi Gong
中科院分区：
文献类型：
--
作者：
Junhui Zhao;Shanjin Ni;Yi Gong
由于FBMC/OQAM系统与OFDM系统在信号结构上的差异，现有的降低OFDM系统峰均功率比（PAPR）的技术不适用于FBMC/OQAM系统。针对FBMC/OQAM系统中的峰均比问题，提出了一种改进的联合优化方案，结合线性（即，部分发送序列（PTS））和非线性（即，剪切和滤波（CF））方法，称为改进的双层部分发送序列和迭代剪切和滤波（IBPTS-ICF）方案。该联合优化方案的主要思想是对经过IBPTS技术降低峰值概率后的FBMC/OQAM信号进行削波滤波。同时，借助凸优化的知识，IBPTS-ICF联合优化方案可以有效地降低信号失真。仿真结果证实了该方案具有良好的峰均比降低性能。
Owing to the signal structure difference between the filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) and the orthogonal frequency-division multiplexing (OFDM) systems, the existing technologies to reduce the peak-to-average power ratio (PAPR) for OFDM systems are not suitable for the FBMC/OQAM systems. This paper considers the problem of PAPR in the FBMC/OQAM systems, and to reduce the PAPR of the FBMC/OQAM signal, we propose an improved joint optimization scheme combined with the linear (i.e., partial transmit sequence (PTS)) and nonlinear (i.e., clipping and filtering (CF)) methods, named improved bilayer partial transmit sequence and iterative clipping and filtering (IBPTS-ICF) scheme. The main idea of this joint optimization scheme is clipping and filtering the processed FBMC/OQAM signal, whose probability of the peak value has been reduced by the IBPTS technique. Meanwhile, aided by the knowledge of convex optimization, the IBPTS-ICF joint optimization scheme can effectively reduce the signal distortion. The excellent PAPR reduction performance of the proposed scheme has been confirmed in our simulations.
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影响因子：
1.9
作者：
Nuan van der Neut;B. T. Maharaj;Frederick H. de Lange;Gustavo J. González;F. Gregorio;J. Cousseau
通讯作者：
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DOI：
--
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