Journal of Systems Engineering and Electronics ›› 2011, Vol. 33 ›› Issue (9): 2106-2110.doi: 10.3969/j.issn.1001-506X.2011.09.35

• 通信与网络 • 上一篇    下一篇

基于PSWF的高效正交脉冲设计方法

赵志勇, 王红星, 舒根春, 刘传辉, 刘锡国   

  1. 海军航空工程学院电子信息工程系, 山东 烟台 264001
  • 出版日期:2011-09-17 发布日期:2010-01-03

Orthogonal pulses designing method based on PSWF

ZHAO Zhi-yong, WANG Hong-xing, SHU Gen-chun, LIU Chuan-hui, LIU Xi-guo   

  1. Department of Electronic and Information Engineering, Naval Aeronautical and Astronautical University, Yantai 264001, China
  • Online:2011-09-17 Published:2010-01-03

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〖CD*2〗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。

Abstract:

For improving system bandwidth efficiency, an orthogonal pulses designing method with high efficiency based 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. Orthogonal 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.