FBMC/OQAM系统中改进的峰均比抑制方法  

Improved peak-to-average ratio reduction method in FBMC/OQAM system

作　　者：李磊[1] 薛伦生[1] 陈西宏[1] 邹兵 LI Lei;XUE Lunsheng;CHEN Xihong;ZOU Bing(Air and Missile Defense College,Air Force Engineering University,Xi’an 710051,China;Unit 93145 of the Chinese People’s Liberation Army,Nanjing 210000,China)

机构地区：[1]空军工程大学防空反导学院,西安710051 [2]中国人民解放军93145部队,南京210000

出　　处：《北京航空航天大学学报》2023年第2期457-463,共7页Journal of Beijing University of Aeronautics and Astronautics

基　　金：国家自然科学基金(61671468)。

摘　　要：针对偏移正交幅度调制的滤波器组多载波(FBMC-OQAM)系统中峰值平均功率比(PAPR)过高会引起失真且对信道估计性能造成影响的缺点,提出了一种基于相位旋转的干扰消除法(ICM-P)。该方法产生不同的相位序列,与传输数据相乘得到多组数据序列,分别计算其PAPR,并选择PAPR最低的一组进行传输。仿真验证与分析表明:所提方法能有效降低系统过高的峰值平均功率比,误码率不高,且信道估计性能较原ICM方法没有明显下降。Aiming at the shortcomings of high peak-to-average power ratio(PAPR)in the filter bank multi-carrier system with offset quadrature amplitude modulation(FBMA/OQAM)system,which will cause distortion and affect the channel estimation performance,an interference cancellation method based on phase rotation(ICM-P)is proposed in this paper.This ICM-P method generates different phase sequences,obtains multiple sets of data sequences by multiplying with the transmission data,and calculates their PAPR respectively before selecting the group with the lowest PAPR for transmission.Simulation verification and analysis show that the ICM-P method can effectively reduce the excessive peak-to-average power ratio of the system,the bit error rate is not high,and the channel estimation performance is not significantly lower than the original ICM method.

关 键 词：滤波器组多载波 偏移正交幅度调制 峰值平均功率比 干扰消除法 相位旋转 

分 类 号：TN914[电子电信—通信与信息系统]