一种新的基于混沌脉冲位置调制的UWB-IR通信系统  

Novel UWB-IR communication system based on chaotic pulse position modulation

作　　者：马龙[1] 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210007

出　　处：《解放军理工大学学报（自然科学版）》2007年第4期338-342,共5页Journal of PLA University of Science and Technology(Natural Science Edition)

摘　　要：基于混沌脉冲位置调制的UWB—IR通信系统,是将混沌理论应用于超宽带通信的一种实现方案。针对此类系统的误码率性能不够理想,提出了一种新的基于混沌脉冲位置调制的UWB—IR通信系统。它通过滑动窗口实现匹配滤波的解调方案,改善了原通信系统的误比特率性能。并给出了一种利用参数敏感性实现系统的初始同步的方法。仿真结果表明,改进后的UWB-IR通信系统的误比特性能比原系统的误比特性能提高了7～8 dB,从而验证了该方案的正确性。Since proposed CPPM UWB-IR communication systems have poor performance of BER, a novel demodulation method was presented, which could evidently improve the BER performance by using a slipping window to control the working period of the matched filter. Another method which came from parameter sensitivity was also introduced to realize initial synchronization of this system. Simulations show that the BER performance of this novel system can be improved by 7～8 dB, which verifies the validity of this scheme.

关 键 词：超宽带冲击无线电 混沌脉冲位置调制 LOGISTIC映射 相关特性 

分 类 号：TN973.3[电子电信—信号与信息处理]