基于PSWF的高效正交脉冲设计方法  

Orthogonal pulses designing method based on PSWF

作　　者：赵志勇[1] 王红星[1] 舒根春[1] 刘传辉[1] 刘锡国[1] 

机构地区：[1]海军航空工程学院电子信息工程系,山东烟台264001

出　　处：《系统工程与电子技术》2011年第9期2106-2110,共5页Systems Engineering and Electronics

摘　　要：为了提高系统的单位频带利用率,基于时限椭圆球面波函数提出了一种高效正交脉冲设计方法。脉冲设计频段被划分为多个相互交叠的子频带,基于频-时域波形设计方法,各子频带分别求解带通时限椭圆球面波函数。通过正交化方法构建时域正交脉冲,所设计的正交脉冲在子频带内频谱相互混叠,相邻子频带内频谱相互交叠。理论分析及仿真结果表明,正交脉冲在频域上具有较好的能量聚集性,用于信息传输时,通信系统的单位频带利用率极限值可达到2 Baud/Hz。For improving system bandwidth efficiency, an orthogonal pulses designing method with high efficiency hased on time-limited prolate spheroidal wave functions is proposed. Frequency band is divided into multiple sub-bands which are overlapped in frequency domain. Bandpass and time-limited prolate spheroidal wave functions are derived from each sub-band based on the frequency-time domain pulse designing method. Orthogo- nal pulses are constructed by an orthogonalization method. The pulses＇ spectrum is mixed in the same sub-band and overlapped in adjacent sub-band. Theory analysis and simulation results show that the orthogonal pulses have good energy concentration in frequency domain and the maximum system bandwidth efficiency is as great as 2 Baud/Hz.

关 键 词：通信 频带利用率 椭圆球面波函数 正交脉冲 

分 类 号：TN911.3[电子电信—通信与信息系统]