中文摘要：

为提高扩频通信的可靠性和安全性,提出一类基于三元组密钥流的扩频码构造方法。针对传统扩频码周期短和混沌扩频码算法随机性弱等不足,将周期不重复、初值敏感和算法随机的三元组随机序列进行同态均匀映射或正交变换,以获取同态三元组扩频码或正交三元组扩频码;通过实验验证了该类扩频码具有良好的平衡度、自相关和互相关等特性指标;将该类三元组扩频码应用于蒙特卡罗直接扩频通信模型和DS-CDMA多用户通信系统模型进行仿真测试,仿真结果表明,该类扩频码相比传统扩频码、混沌扩频码更适合扩频通信需要。

英文摘要：

To improve the reliability and safety of the spread spectrum system, a class of spreadiv4g code construction method based on the ternary tuple key stream was proposed. Because traditional spreading codes have short period and chaos spreading codes have weak al- gorithm randomness, firstly, the ternary random sequence with the characteristics of avoidance of repeated period, sensitivity to initial value and random algorithms was processed using homornorphic uniform mapping or orthogonal transformation to obtain the homomorphic ternary spreading code or orthogonal ternary spreading code. Secondly, experiments verify that the ternary tuple spreading codes perform well in balance, autocorrelation and crosscorrelation. Finally, applying the ternary spreading codes into simulation tests of Monte Carlo direct spread spectrum communication model and DS-CDMA multi-user communication system model, the simulation results show this kind of ternary tuple spreading code is more suitable for the spread spectrum communication.