摘要
基于Logistic映射 ,提出了一种产生混沌跳频序列的新方法。该方法是先对Logistic映射的轨道点进行多值量化 ,然后利用比特抽取产生所需的混沌跳频序列。性能分析和数值实验表明 ,在相同的条件下 (频率数目和序列长度相同 ) ,其平衡性、跳频间隔和最大汉明相关值与其它方法产生的混沌跳频序列相当 ,然而其所需的迭代次数却大大减少了 。
A method to generate chaotic frequency-hopping (FH) sequences was proposed on the basis of the Logistic map. The chaotic real-valued sequences of Logistic map were first encoded to binary sequences by means of a quantization function, then chaotic FH sequences by reshaping bits of these binary sequences were obtained. The performance analysis and experiment results show that the sequence has the same balance properties, frequency-hopping number and sequence length as other FH sequences, but much less requirements of iterative operation. It can be concluded that the FH sequences generated by the novel method are suitable for FH code-division multiple-access systems.
出处
《电波科学学报》
EI
CSCD
2004年第3期333-337,共5页
Chinese Journal of Radio Science
