FBMC/OQAM中基于离散粒子群优化的峰均比抑制方法  

PAPR Reduction Based on Discrete Particle Swarm Optimization in FBMC/OQAM

作　　者：胡邓华[1] 李磊[1] 薛伦生[1] HU Denghua;LI Lei;XUE Lunsheng(Air and Missile Defense College,Air Force Engineering University,Xi’an 710051,China)

机构地区：[1]空军工程大学防空反导学院,西安710051

出　　处：《电讯技术》2023年第6期862-869,共8页Telecommunication Engineering

基　　金：国家自然科学基金资助项目(61671468)。

摘　　要：部分传输序列(Partial Transmit Sequence,PTS)是降低正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)系统峰均比(Peak-to-Average Power Ratio,PAPR)的有效方法,但是PTS穷举法搜索最优解,使系统复杂度增加。针对这一缺点进行改进,提出了基于离散粒子群优化的部分传输序列(Partial Transmit Sequence based on Discrete Particle Swarm Optimization,PTS-DPSO)方法,并将其应用到基于偏移正交幅度调制的滤波器组多载波系统(Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation,FBMC/OQAM)中。PTS-DPSO利用离散粒子群优化搜寻最优解,避免了系统复杂度的增加。通过仿真验证,PTS-DPSO可以有效抑制FBMC/OQAM系统过高的PAPR且误码率低。Partial transmit sequence(PTS)is an effective method to reduce the peak-to-average power ratio(PAPR)of orthogonal frequency division multiplexing(OFDM)system,but PTS needs exhaustive method to search for the optimal solution,which will increase the complexity of the system.For this drawback,a Partial Transmit Sequence based on Discrete Particle Swarm Optimization(PTS-DPSO)method is proposed and applied to Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation(FBMC/OQAM)system.PTS-DPSO uses Discrete Particle Swarm Optimization(DPSO)to search for the optimal solution,avoiding the increase in system complexity.And through simulation verification,PTS-DPSO can effectively reduce the high PAPR of the FBMC/OQAM system,and the bit error rate is also low.

关 键 词：滤波器组多载波(FBMC) 偏移正交幅度调制(OQAM) 峰均比(PAPR)抑制 部分传输序列(PTS) 离散粒子群优化(DPSO) 

分 类 号：TN914.3[电子电信—通信与信息系统]