中文摘要：

对噪声的相关性进行了数学分析,通过计算机仿真技术,证实了人为噪声具有较强的相关性,给出了PISM在双边带系统中的应用实例,通过实验和仿真证实了PISM-DSB系统确实能大幅度提高信噪比.

英文摘要：

This paper makes mathematical analysis on the correlation of the noise, and identifies that the man-made noise possesses stronger correlation through the emulation technique of the computer, gives some actual applications of the PISM in the DSB system, and points out that the PISM in the DSB system can greatly improve the SNR by experiments and simulations.