PSWF非正弦时域正交调制系统有限字长效应研究  

The Finite Word Length Effect study In the Nonsinusoidal Orthogonal Modulation System in Time Domain Based on PSWF

作　　者：张晨亮[1] 王红星[2] 康家方[2] 刘传辉[2] 

机构地区：[1]海军航空工程学院基础实验部,山东烟台264001 [2]海军航空工程学院电子信息工程系,山东烟台264001

出　　处：《中国电子科学研究院学报》2013年第6期650-655,共6页Journal of China Academy of Electronics and Information Technology

基　　金：国家自然科学基金(60772056);山东省泰山学者建设工程专项经费资助课题

摘　　要：在基于PSWF的非正弦数字通信中,二进制定点数的截尾误差与舍入误差对系统的性能影响不容忽视。首先分析了二进制定点数产生有限字长效应的原因,接着对二进制定点数的截尾误差与舍入误差进行了理论分析,同时,利用MATLAB针对PSWF通信系统中的具体参数进行了误差仿真,归纳与总结了仿真结果,可为工程应用提供参考。In nonsinusoidal digital communication system of PSWF, It can＇ t be ignored for system that the influence of truncation error and round-off error of the binary fixed point data. Firstly, this paper ana- lyses the reasons of the finite word length effect existence for the binary fixed point data. Then, the theory of truncation error and round-off error are analysed. In addition, the errors for the specific parameter in the communication system of PSWF are simulated using MATLAB. Induction and summary are made a- bout the results of simulation and it can offer the reference for engineering application.

关 键 词：非正弦时域正交调制 椭圆球面波函数 截尾误差 舍入误差 

分 类 号：TN911.7[电子电信—通信与信息系统]