中文摘要：

提出了一种二进制差分随机过程键控的调制解调结构,推导出了在高斯信道和准静态衰落信道下的误比特率理论计算公式,并对系统进行了误比特率和二阶循环谱检测的仿真。仿真结果表明,提出的差分随机过程键控,在高斯信道下大约在-2 d B、在准静态瑞利衰落信道下大约在25 d B的信噪比下具有10-4数量级的误比特率。同时,所提出的差分随机过程键控调制方法,其广义二阶循环谱的不可检测性,使其具有很好的物理层隐蔽性。

英文摘要：

A novel modulation and demodulation structure based on binary differential stochastic process shift keying（BDSPSK） is proposed.The theoretical bit error rates（BER） under the Gaussian and quasi-static Rayleigh fading channels are derived,respectively.To verify its performances and security,lots of simulations are done by using MATLAB.The simulations＇ results show that the BER of the proposed BDSPSK can reach 10-4 when signal to noise ratio（SNR） is about-2 d B in the Gaussian channel or 25 d B in the Rayleigh fading channel.Meanwhile,the proposed method has a good concealment due to its undetectable property by the generalized second order cyclostationary spectrum,which makes it suit for secure communications in the physical layer.