降低滤波器组多载波信号峰均比的边信息嵌入选择性映射方法  

Selected mapping method with embedded side information to reduce PAPR of FBMC signals

作　　者：夏玉杰[1,2] 时永鹏[1,2] 高雅[1,2] 孙鹏[3] XIA Yujie;SHI Yongpeng;GAO Ya;SUN Peng(Henan Key Laboratory for Big Data Processing and Analytics of Electronic Commerce(Luoyang Normal University),Luoyang Henan 471934,China;College of Physical and Electronic Information,Luoyang Normal University,Luoyang Henan 471934,China;School of Information Engineering,Zhengzhou University,Zhengzhou Henan 450001,China)

机构地区：[1]河南省电子商务大数据处理与分析重点实验室(洛阳师范学院),河南洛阳471934 [2]洛阳师范学院物理与电子信息学院,河南洛阳471934 [3]郑州大学信息工程学院,郑州450001

出　　处：《计算机应用》2021年第5期1425-1431,共7页journal of Computer Applications

基　　金：国家自然科学基金资助项目(61901417);河南省科技攻关项目(202102210120,192102210247);河南省高等学校青年骨干教师培养计划项目(2018GGJS126)。

摘　　要：针对现有选择性映射(SLM)方法抑制滤波器组多载波(FBMC)信号峰均比(PAPR)的性能不佳及边信息错误率(SIER)高的问题,提出了一种边信息(SI)嵌入的SLM方法来抑制PAPR。在发送端,设计了一组嵌入SI的相位旋转矢量,并将相位旋转矢量同发送数据块相乘产生备选数据块;利用备选数据块的实部和虚部分量的逆离散傅里叶变换(IDFT)输出,设计了基于循环时移的候选FBMC信号,并选择具有最小PAPR的候选信号进行发送。在接收端,利用SI子载波数据的旋转相位不同提出了与发送符号调制阶数无关的低复杂度SI检测器。仿真结果表明,所提方法在发送端能够有效降低FBMC信号的PAPR,在接收端具有良好的SI检测和误比特率(BER)性能。To solve the problems of the poor reduction performance of Filter Bank MultiCarrier(FBMC)signals’Peakto-Average Power Ratio(PAPR)and the high Side Information Error Rate(SIER)of the existing Selected Mapping(SLM)method to reduce PAPR signals,an SLM method with embedded Side Information(SI)was presented to reduce PAPR.At the transmitter,a group of phase rotation vectors with embedded SI were designed,and the candidate data blocks were generated by multiplying the phase rotation vectors with the transmitting data blocks.By using the outputs of Inverse Discrete Fourier Transform(IDFT)of the real and imaginary components of the candidate data blocks,the candidate FBMC signals based on cyclic time shift were designed and the candidate signal with the lowest PAPR was selected and transmitted.At the receiver,by using the difference between the phase rotations of the SI subcarrier data,a low-complexity SI detector unrelated to modulation order of transmitted symbols was proposed.Simulation results show that the proposed method can effectively reduce the PAPR of FBMC signals at the transmitter and obtain good SI detection and Bit Error Rate(BER)performances at the receiver.

关 键 词：峰均比 选择性映射 滤波器组多载波 偏移正交幅度调制 边信息 

分 类 号：TN911.7[电子电信—通信与信息系统]