CAJ | 학술논문

脉冲位置相位翻转键控(3PRK)是一种超窄带(UNB)调制技术.相关文献已证明其已调信号是循环平稳信号,对其频谱也作了分析,但对该调制信号具有的循环平稳特性却没有相关论述.介绍了循环平稳信号的定义,推导了3PRK信号的循环谱数学表达式,提出了利用循环统计量对3PRK信号进行检测的方法,并进行了仿真实验.实验表明,该方法有很强的噪声抑制能力.
맥충위치상위번전건공(3PRK)시일충초착대(UNB)조제기술.상관문헌이증명기이조신호시순배평은신호,대기빈보야작료분석,단대해조제신호구유적순배평은특성각몰유상관논술.개소료순배평은신호적정의,추도료3PRK신호적순배보수학표체식,제출료이용순배통계량대3PRK신호진행검측적방법,병진행료방진실험.실험표명,해방법유흔강적조성억제능력.
Pulse Position Phase Reversal Keying (3PRK) is a kind of UNB modulation method. And it has already been proved that 3PRK signal is of cyclostationary property and its Fourier spectrum has been studied, however, its cyclostafionary property hasn't been studied. In this paper, the concepts of cyclostationary signal are briefly discussed and the mathematical expression of cyclic spectral density (CSD) of 3PRK signal is deducted. By utilizing cyclic statistics method, this paper also puts forward a test method and gives simulations of 3PRK signal. The experiment shows cychc statistics has a powerful capability of controlling noise.