扩频通信中扩频水印的嵌入方法

A Method of Inserting Spread Spectrum Watermarking into Spread Spectrum Signal

本文提出了一种基于多码扩频(MC-DSSS)技术的数字水印嵌入方法,即利用扩频码的正交性将扩频水印嵌入到扩频通信信号中。理论分析和仿真结果表明,此种方法嵌入的水印具有很多优点,如透明性、鲁棒性和可靠性等,并具有良好的抗干扰性能。

A new method based on Multi - code Direct Sequence Spread Spectrum （ MC - DSSS） technology is proposed to insert a spread spectrum watermarking into a spread spectrum communication signal. In this method,the spread spectrum signal plus spread spectrum watermarking are transmitted into channel, but their spread codes are orthogonalo The theoretical analysis and simulation indicate that there are many advantages in this watermarking, such as transparency, reliability, robustness and anti - jamming.