提高混沌同步通信系统传输效率的方法

Enhancement of Transmission Efficiency in Synchronized Chaotic Communication Systems

本文讨论了混沌同步数字通信系统的传输效率 ,考察了驱动信号取样周期对同步性能的影响 ,适当选取取样周期 ,可减少驱动信号的数据量 .由于传输效率与系统设计有关 ,本文提出一种利用时空混沌同步的加密通信方案 ,该方案将时空混沌信号用作加密密钥 ,每个驱动信号样本可使时空系统同时产生多个密钥 ,对多个消息数据进行加密 ,从而有效地提高了数据传输效率 。

Transmission efficiency in synchronized chaotic communication systems is discussed. The dependence of synchronization performance of the chaotic system on sampling period of driving signal is investigated and the driving data to be transmitted are reduced by choosing a suitable sampling period. A digital communication scheme using synchronization of spatiotemporal chaotic systems is proposed. The spatiotemporal chaotic signals serve as the secret keys and each driving sample can drive the system to generate many keys for encrypting many message units at the same time. The communication efficiency is enhanced significantly.