基于椭圆球面波信号的连续相位调制及其频谱性能分析

杨大伟; 刘传辉; 康家方

doi:10.11959/j.issn.1000-0801.2020277

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基于椭圆球面波信号的连续相位调制及其频谱性能分析

研究与开发 | 更新时间：2024-06-05

- 基于椭圆球面波信号的连续相位调制及其频谱性能分析
- PSWF signal based continuous phase modulation and its spectrum performance analysis
- 电信科学 2020年36卷第11期页码：68-78
- 作者机构：
  
  1. 海军航空大学，山东烟台 264001
  2. 91439部队，辽宁大连 116041
- 作者简介：
  
  [ "杨大伟（1988- ），男，海军航空大学博士生，主要研究方向为非正弦波通信、连续相位调制" ]
  [ "刘传辉（1984- ），男，博士，海军航空大学讲师，主要研究方向为现代通信系统、非正弦波通信" ]
  [ "康家方（1987- ），男，博士，海军航空大学讲师，主要研究方向为卫星导航信号设计、扩频通信等" ]
- 基金信息：
- DOI：10.11959/j.issn.1000-0801.2020277
  中图分类号： TN914.3
- 网络出版日期：2020-11，
  
  纸质出版日期：2020-11-20
- 稿件说明：
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杨大伟, 刘传辉, 康家方. 基于椭圆球面波信号的连续相位调制及其频谱性能分析[J]. 电信科学, 2020,36(11):68-78.

Dawei YANG, Chuanhui LIU, Jiafang KANG. PSWF signal based continuous phase modulation and its spectrum performance analysis[J]. Telecommunications science, 2020, 36(11): 68-78.
杨大伟, 刘传辉, 康家方. 基于椭圆球面波信号的连续相位调制及其频谱性能分析[J]. 电信科学, 2020,36(11):68-78. DOI： 10.11959/j.issn.1000-0801.2020277.

Dawei YANG, Chuanhui LIU, Jiafang KANG. PSWF signal based continuous phase modulation and its spectrum performance analysis[J]. Telecommunications science, 2020, 36(11): 68-78. DOI： 10.11959/j.issn.1000-0801.2020277.

摘要

椭圆球面波信号（PSWF）是时频域最佳能量聚集性信号，探索性地将PSWF信号应用于连续相位调制（CPM）技术，对基于椭圆球面波信号的CPM调制信号产生过程进行了描述；给出了采用自相关函数法对基于PSWF的CPM调制信号功率谱密度计算方法；结合数值计算、分析对比了最小频移键控、正弦频移键控、高斯最小频移键控以及基于高斯函数的CPM调制信号功率谱密度及其信号占用带宽等特性。数值计算结果表明椭圆球面波信号相比矩形脉冲、升余弦脉冲、高斯脉冲及（类）高斯脉冲作为CPM的基带调频信号，可以获得频谱性能、能量聚集性较好的CPM信号。

Abstract

Prolate spheroidal wave function (PSWF) signals are the best energy-gathering signals in the time-frequency domain

here is an exploratory application of PSWF signals to continuous phase modulation technology.Firstly

the process of generating CPM modulated signals based on PSWF signals was described.Secondly

a calculation method for the power spectral density of CPM modulated signals based on PSWF using the autocorrelation function method was given.Finally

combined with numerical calculation and analysis

the power spectral density and signal occupied bandwidth characteristics of minimum frequency shift keying

sinusoidal frequency shift keying

Gaussian filtered minimum shift keying and CPM modulation signal based on Gaussian function were compared.Numerical calculation results show that the PSWF signal can obtain CPM modulation signal with better spectral performance and energy concentration

compared with rectangular pulse

raised cosine pulse

Gaussian pulse and Gauss-like pulse as the baseband frequency modulation signal of CPM.

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