Logistic映射下N-continuous OFDM加密方案  

N-continuous OFDM encryption scheme based on logistic map

作　　者：曹礼梅 周杰[1] 罗宏[1] 邵根富[2] CAO Limei;ZHOU Jie;LUO Hong;SHAO Genfu(Key Laboratory of Meteorological Observation and Information Processing,Nanjing University of Information Science&Technology,Nanjing 210044,China;College of Automation,Hangzhou Dianzi University,Hangzhou 310018,China)

机构地区：[1]南京信息工程大学气象探测与信息处理重点实验室,江苏南京210044 [2]杭州电子科技大学自动化学院,浙江杭州310018

出　　处：《安徽大学学报（自然科学版）》2018年第6期71-77,共7页Journal of Anhui University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61471153;61771248);江苏省高校自然科学基金重大项目(14KJA510001)

摘　　要：针对信号传输安全问题,提出利用混沌随机性和初值敏感性相结合的数据传输加密方案.该方案首先利用混沌产生随机混沌序列,然后用该序列改变传输数据的相位以及系统子载波的映射规则,最后利用密钥恢复信号.仿真结果表明该方案能有效对系统进行数据加密,加密效果良好,在保证高频谱利用率和较强分配灵活性的同时,能增强旁瓣抑制效果.因此,该方案能确保数据传输安全.Aiming at the security of signal transmission,a scheme of data encryption combined with chaos randomness and initial sensitivity was proposed.Firstly,the chaotic sequence was generated by chaos,and then the chaotic sequences were used to change the phase of transmitted data and the mapping rules of the sub-carriers.Finally,the signal was restored at the receiver.The simulation results showed that the scheme can effectively transmit N-continuous orthogonal frequency division multiplexing data,the output signal was random and the encryption effect was obvious.It could enhance the effect of side-lobe suppression while ensuring the high frequency of spectrum utilization and the flexibility of distribution.Therefore,this scheme ensured the data transmission security.

关 键 词：N阶连续正交频分复用 LOGISTIC混沌映射 传输安全 混沌 

分 类 号：TN914.3[电子电信—通信与信息系统]