CAJ | 학술논문

为了证明反加窗算法是一种完全重构算法，将完全不同的反加窗算法和重叠加窗算法合并为相同的信噪比数学模型，分析了反加窗算法；通过建立等效模型，用信号重构理论推导出等效模型的信噪比损失，证明了反加窗算法是一种完全重构算法，提出了反加窗算法只有在信号不完全重构的条件下才需要使用的观点。在直接序列扩频系统中，通过对布莱克曼窗和汉宁窗的对比，在窄带噪声干扰下仿真误码率，证明了该文结论的正确性，并提出了干扰抑制方案。
위료증명반가창산법시일충완전중구산법，장완전불동적반가창산법화중첩가창산법합병위상동적신조비수학모형，분석료반가창산법；통과건립등효모형，용신호중구이론추도출등효모형적신조비손실，증명료반가창산법시일충완전중구산법，제출료반가창산법지유재신호불완전중구적조건하재수요사용적관점。재직접서렬확빈계통중，통과대포래극만창화한저창적대비，재착대조성간우하방진오마솔，증명료해문결론적정학성，병제출료간우억제방안。
In order to prove the inverse windowing algorithm is a complete reconstruction algorithm, the inverse windowing algorithm is analyzed, through the method that the completely different inverse windowing algorithm and overlapping windowing algorithm are combined into the same mathematical model of SNR; equivalent model is established, the SNR loss of equivalent model is deduced by signal reconstruction theory, which demonstrates that inverse windowing algorithm is a kind of perfect reconstruction algorithm, so the idea is proposed that it is necessary for inverse windowing algorithm to use under conditions of incomplete reconstruction. Compared windowing effects between Hanning window and Blackman window in DSSS which contains narrow-band interference, error rate is simulated, which proves the correctness of this article conclusion.Interference suppression scheme is proposed.