基于PSWF奇偶特性的子频段分组脉冲组设计方法  

Design of Sub-band Grouping Pulse Group Based on PSWF Parity Characteristic

作　　者：缪幸吉 刘传辉 王红星 陆发平 康家方 MIAO Xingji;LIU Chuanhui;WANG Hongxing;LU Faping;KANG Jiafang(Naval Aviation University,Yantai 264001,China;Naval Equipment Department,Xi'an 710000,China)

机构地区：[1]海军航空大学,山东烟台264001 [2]海军装备部,西安710000

出　　处：《电光与控制》2020年第10期53-56,98,共5页Electronics Optics & Control

基　　金：国家自然科学基金(61701518);山东省“泰山学者”建设工程专项经费基金(ts20081130)。

摘　　要：针对现有椭圆球面波函数(PSWF)脉冲组方案中正交化处理和自身构造限制造成系统复杂度高、调制信号峰均功率比高的不足,结合PSWF信号奇偶特性,提出了一种基于PSWF奇偶特性的子频段分组脉冲组设计方法,通过将通信频段划分为若干个带宽相同且相邻的子频段,在子频段内划分频谱交叠的子波带构建脉冲组,利用子波带中具有不同奇偶特性的PSWF信号之间天然的正交性,完全避免了正交化处理。理论和数值分析表明,与正交化处理PSWF脉冲组方案相比,所提方案能有效降低系统复杂度;并且当CCDF为10-4时,能使调制信号峰均功率比降低约1.49 dB。Due to orthogonalization processing and its own structural constraints,the Prolate Spheroidal Wave Function(PSWF)pulse group scheme has high system complexity and high Peak-to-Average Power Ratio(PAPR)of the modulation signal.Aiming at the problems,and considering the odd-even feature of PSWF signal,a sub-band grouping pulse group scheme based on PSWF parity characteristics is proposed.The communication frequency band is divided into several sub-bands with the same and adjacent bandwidth,and the overlapped wavelet bands are divided within the sub-band to construct the pulse group.The natural orthogonality between PSWF signals with different odd-even characteristics in the wavelet band is utilized to completely avoid the orthogonalization processing.Theoretical and numerical analysis show that:1)Compared with the orthogonalized PSWF pulse group scheme,our scheme can effectively reduce the system complexity;and 2)When CCDF is 10-4,the PAPR of modulation signal can be reduced by about 1.49 dB.

关 键 词：椭圆球面波函数 脉冲组 峰均功率比 奇偶特性 

分 类 号：TN911.7[电子电信—通信与信息系统]