摘要
依据时域相位码分多址隐藏通信系统模型,研究了宿主滤波器对隐藏系统性能影响。系统仿真表明,滤波器的使用提高了系统性能,减低了隐藏信道的接收难度;随着滤波深度的增加,隐藏信道所需的接收功率减小,且宿主信号与隐藏信号的功率比增大;仿真研究表明当滤波深度达到30dB时可获得最佳性能。
According to time domain phase encoding code-division multiple access stegenography communica- tion system model,host filter effect to stegenography system performance was analyzed.Numerical results show that introducing of filter will increase system BER performance, and reduce the recovering difficulty for the steganography signal. With the increase of filtering depth, receiving power decreases for the stegenography channel, and power ratio between host and steganography can be increased. Simulation results also show that 30dB filtering depth will be optimal for each system.
出处
《光通信技术》
CSCD
北大核心
2012年第9期46-48,共3页
Optical Communication Technology
关键词
隐藏通信
光码分多址
相位编码
steganography communication
optical code division multiple access
phase encoding
