Spread Spectrum System has a strong antijammingcapability and strong security. It can be used for multiple access communications.
扩频系统有很强的抗干扰能力,可进行多址通信、安全保密强。
参考来源 - 扩频信号检测理论与最佳干扰方法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The Sectera smart phones can operate on both Global System for Mobile Communications and Code Division Multiple Access commercial cellular networks.
该Sectera智能手机可以运行全球移动通信系统和CD MA商用蜂窝网络。
In direct sequence code division multiple access (DS-CDMA) communications, blind signal detection and interference cancellation are the important methods to increase system capacities.
在直扩码分多址(DS - CDMA)通信中，盲信号检测及干扰抑制技术是增加系统容量的重要手段。
Security is difficult to handle in multi-privileged group communications, because group users have multiple access privileges when subscribing different data streams.
多权限组播通信存在多个数据流且组播组中用户权限因获得数据流的不同而不同，其安全问题较难处理。
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