摘要
在无线移动通信中,深刻理解和精确模拟传播信道对于通信系统的设计和性能分析是至关重要的。对基于莱斯正弦和法仿真色高斯随机过程的5种方法即等距离法、等面积法、蒙特卡洛法、最小均方误差法和精确多普勒扩展法进行了性能分析。通过分析得出,精确多普勒扩展法性能最好,最小均方误差法次之,然后是等面积法和等距离法,性能最差的是蒙特卡洛法。通过与理论值进行比较,证明了当正弦函数的数目越大逼近程度越好这一结论。
In wireless mobile communication,in-depth understanding and precise simulation of the propagation channel plays an important role in design and performance analysis of communication system.The paper analyzes the performance by using MED,MEA,MCM,MSEM and MEDS methods,and describes the simulation of colored Gaussian random processes based on sum of Rician sinusoid.The paper,based on the analysis,concludes that MEDS method is the best in performance,MSEM method is the second,and then followed are MED and MEA methods.The worst one is MCM method.Through the comparison with theoretical value,the conclusion is proved that the larger the number of sinusoid,the better the approximation.
出处
《信息安全与通信保密》
2010年第9期55-57,61,共4页
Information Security and Communications Privacy
关键词
移动信道
信道模型
莱斯正弦和
多普勒扩展
mobile channel
channel model
sum of Rician sinusoid
doppler spread
