Clipping-Based Iterative PAPR-Reduction Techniques for FBMC
Clipping-Based Iterative PAPR-Reduction Techniques for FBMC
复制标题
DOI：
--
复制
发表时间：
2012-09
期刊：
影响因子：
--
通讯作者：
Z. Kollár;L. Varga;K. Czimer
中科院分区：
文献类型：
--
作者：
Z. Kollár;L. Varga;K. Czimer
正交频分复用（OFDM）是多载波无线通信中最常用的调制技术。近年来，滤波器组多载波（FBMC）调制方案因其较低的相邻信道泄漏比（ACLR）而备受关注，特别适合于认知无线电（CR）应用。在多载波方案中，信号动态范围大是一个普遍的问题，FBMC和OFDM信号都具有较高的峰均功率比（PAPR）。如果存在非线性失真，这种大的PAPR会导致频谱再生，从而在邻近频段造成有害干扰。本文提出了一种有助于降低FBMC信号PAPR的基于裁剪的方法。对面向发送器和面向接收器的方法进行了比较。
—Orthogonal Frequency Division Multiplexing (OFDM) is the most favored modulation technique in multicarrier wireless communications. Recently, the Filter Bank Multicarrier (FBMC) modulation scheme has drawn attention due its low Adjacent Channel Leakage Ratio (ACLR), which makes it especially suitable for Cognitive Radio (CR) applications. In multicarrier schemes the large dynamic range of the signal is a common problem, both FBMC and OFDM signals have high Peak-to-Average Power Ratio (PAPR). If nonlinear distortions are present, this large PAPR can lead to spectral regrowth causing harmful interference in the neighboring frequency bands. In this paper clipping-based PAPR-reduction schemes aided to reduce the PAPR of FBMC signal are presented. A comparison is given for both transmitter and receiver oriented methods.