基于混沌脉冲幅度调制的超宽带通信系统  

Ultra Wide Band Communication System Based on Chaotic Pulse Amplitude Modulation

作　　者：李志军[1] 安建平[1] 周荣花[1] 孙钢灿[1] 

机构地区：[1]北京理工大学信息科学技术学院电子工程系,北京100081

出　　处：《北京理工大学学报》2008年第7期614-617,共4页Transactions of Beijing Institute of Technology

基　　金：国家部委基金资助项目(220060XX)

摘　　要：提出了一种实现超宽带直接混沌通信的混沌脉冲幅度调制(CPAM)算法,给出了CPAM算法原理及其调制解调方案.使用电子电路全功能模拟测试仿真软件(EWB)仿真分析了基于CPAM技术超宽带混沌通信系统的间歇耦合同步.仿真结果表明,收发两端可以精确同步,验证了系统的可实现性.系统误码率仿真显示,其可靠性比传统的正交相移键控(QPSK)等算法差,但混沌信号的引入大大改善了通信的保密性.Proposes novel method--the chaotic pulse amplitude modulation to implement ultrawide band（UWB） direct chaotic communications. The implementation of chaotic pulse amplitude modulation （CPAM） and demodulation is described. The sporadic-coupling synchronization methods for the UWB system based on CPAM are simulated with electronics workbench（EWB）. Means of the synchronization are confirmed by the simulation results. The simulation result for the probability of bit error showed that the performance of CPAM was worse than traditional methods such as quadrature phase shift keying（QPSK）. However the introduction of chaotic signal much improves security of communication.

关 键 词：超宽带 混沌脉冲幅度调制 混沌同步 

分 类 号：TN914.2[电子电信—通信与信息系统] TN751[电子电信—信息与通信工程]