The problem of optimal periodic pulse jamming design for a quadrature phase shift keying（QPSK）communication system is investigated.First a closed-form bit-error-rate（BER）of QPSK system under the jamming of pulse s...The problem of optimal periodic pulse jamming design for a quadrature phase shift keying（QPSK）communication system is investigated.First a closed-form bit-error-rate（BER）of QPSK system under the jamming of pulse signal is derived.Then the asymptotic performance of the derived BER is analyzed as the signal-to-noise ratio（SNR）grows to infinity.In order to maximize the BER of the QPSK system,the optimal parameters of periodic pulse jamming signal,including the duty cycle and signal-tojamming power ratio（SJR）,are found out.Numerical results are presented to verify our analytical results and the optimality of our design.展开更多
本文在传统的集中式大功率干扰暴露出越来越多缺陷的背景下,分析了分布式干扰的优势和噪声调幅信号的特性,并且简要介绍了短波通信的基本原理和特点。在MIL-STD-188-110B:Interoperability and Performance Standards for Data Modems,U...本文在传统的集中式大功率干扰暴露出越来越多缺陷的背景下,分析了分布式干扰的优势和噪声调幅信号的特性,并且简要介绍了短波通信的基本原理和特点。在MIL-STD-188-110B:Interoperability and Performance Standards for Data Modems,U.S.Department of Defense,2000中搭建的短波通信系统的基础上,利用Matlab软件中的Simulink模块仿真分析了分布式干扰系统采用噪声调幅信号对短波通信系统的干扰性能,由仿真结果可以看出分布式干扰可以取得与集中式大功率干扰相当的干扰效果,体现出了理论分析所得出的距离优势和功率优势。展开更多
基金Supported by the National Natural Science Foundation of China(61271258)
文摘The problem of optimal periodic pulse jamming design for a quadrature phase shift keying（QPSK）communication system is investigated.First a closed-form bit-error-rate（BER）of QPSK system under the jamming of pulse signal is derived.Then the asymptotic performance of the derived BER is analyzed as the signal-to-noise ratio（SNR）grows to infinity.In order to maximize the BER of the QPSK system,the optimal parameters of periodic pulse jamming signal,including the duty cycle and signal-tojamming power ratio（SJR）,are found out.Numerical results are presented to verify our analytical results and the optimality of our design.
文摘本文在传统的集中式大功率干扰暴露出越来越多缺陷的背景下,分析了分布式干扰的优势和噪声调幅信号的特性,并且简要介绍了短波通信的基本原理和特点。在MIL-STD-188-110B:Interoperability and Performance Standards for Data Modems,U.S.Department of Defense,2000中搭建的短波通信系统的基础上,利用Matlab软件中的Simulink模块仿真分析了分布式干扰系统采用噪声调幅信号对短波通信系统的干扰性能,由仿真结果可以看出分布式干扰可以取得与集中式大功率干扰相当的干扰效果,体现出了理论分析所得出的距离优势和功率优势。
