多进制编码扩频系统性能的仿真研究  

Simulation of M-ray code spread spectrum system performance

作　　者：崔永[1,2] 许斌[3] 赵军 王传鑫[1] 李欣[1] 

机构地区：[1]装备指挥技术学院研究生院 [2]63650部队 [3]装备指挥技术学院光电装备系

出　　处：《国外电子测量技术》2009年第5期29-33,共5页Foreign Electronic Measurement Technology

摘　　要：对多进制扩频系统进行了概括分析,重点指出该系统中同步路和正交路之间的相互影响是基带数据的编码扩频方式造成的。接下来证明了将待传送的数据进行正交编码后,再乘以一个具有良好自相关特性的长扰码序列,会减弱同步路与正交路之间的相互影响。并提出多进制扩频系统需要更高的捕获精度用以正交路解调数据。最后通过MATLAB仿真验证了结论的正确性。This paper summarizes M-ary direct spread spectrum systems theory firstly, and then analyzes the influence between synchrodyne circuit and orthogonal circuit,which is in the cause of baseband data＇s encoding methods. Then it is proved that after hybrid encoding, orthoeode multiply a long code that has perfect influence will be weakened. Moreover, the data demodulation need, higher acquisition spectrum systems. In the end,results are validated using MATLAB. autocorrelation performance, above precision in the M-ary direct spread

关 键 词：多进制编码扩频 捕获 解调 

分 类 号：TN914.42[电子电信—通信与信息系统]