本文重点研究不等长四相混沌扩频序列的广义奇互相关性质。
This paper mainly discusses the generalized odd cross correlation of chaotic 4-phase spreading sequences with inequal length.
为了增加异步码分多址通信系统的可用码组，研究了在该系统中使用混沌扩频序列的可能性。
In order to expand the group of ades on communication system with asynchronous code division multiaddress (CDMA), the possibility of using chaotic spreading sequences was researched.
并提出了通用的最佳混沌扩频序列设计方法，即利用数字IIR滤波器滤波混沌序列产生最佳混沌扩频序列。
A general methodology for the design of optimal chaotic spreading sequences by using chaotic sequences filtered by digital IIR filter is provided.
与传统直扩序列相比，混沌扩频序列具有非线性复杂度较高的优点，该优点同时也是盲估计混沌扩频序列的难点。
Chaotic direct sequence spread spectrum (CD3S) signal is more nonlinear and more complex than the conventional direct sequence spread spectrum signal.
计算机仿真结果表明，该模型产生的混沌扩频序列调整更容易，比基于单一混沌映射能产生更多符合扩频通信要求的扩频序列。
Experimental results show that this scheme can generate much more spread-spectrum sequences than single chaotic map to satisfy the demand of spread-spectrum communication.
理论分析表明，该混沌序列具有较理想的A -CD MA扩频码性能。
The theoretical analysis shows that the chaotic sequences serve as spreading codes for A-CDMA.
对输出的模拟混沌信号进行过采样和最优量化，可得到性能优良的扩频序列。
Afterward, we can gain spread spectrum sequence by sampling and quantizing the analog chaotic signals.
提出了一种新的混沌序列扩频水印算法。
A new chaos-based spread spectrum watermarking algorithm is developed in the wavelet domain for still images.
提出了一种新的混沌序列扩频水印算法。
A new chaos-based spread spectrum watermarking algorithm is developed in the wavelet domain for still images.
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