文档介绍：目录
中文摘要...................................................Ⅲ
英文摘要...................................................Ⅲ
引言........................................................1
1直序扩频概述
现代通信的安全需要......................................2
直序扩频的发展历史......................................2
本文的主要内容和工作......................................2
2直序扩频的基本理论和概念
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3 PN码的产生
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m序列..................................................13
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m序列的平均功率谱密度.................................15
SSRG的................................................16
m序列生成表...........................................17
4 基与Systemview 的直序扩频系统的仿真与实现
Systemview仿真系统概述..................................17
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MSK直序扩频相关解调系统在Systemview上的仿真..........21
PSK直序扩频信号数字相关解调在Systemview上的仿真......25
MSK与PSK仿真对比.......................................28
5 扩频技术的总结与展望
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结论........................................................31
致谢.......................................................32
参考文献..........................................