In recent years , spread spectrum communication has the wide application because of its own strong interference rejection and particular working 扩频通信以其特有的抗干扰能力强和独特的工作方式在近年来有着广泛的应用领域。
Over the past few decades , frequency - hopping ( fh ) communication system is widely used in military applications for its well performance 跳频通信是扩频通信的一个分支，它的突出优点是抗干扰性强，因而很适用于军事领域。
Ss - ffh distribution automation using distribution line carrier systems - part 5 - 5 : lower layer profilers - spread spectrum - fast frequency hopping ss - ffm profile 采用配电线载波的配电自动化.第5 - 5部分:低层协议集.快速跳频扩频通信
Frequency hopping technology has the capabilities of anti - interference and anti - interception . and it can increase the bandwidth efficiency as well 跳频通信是扩频通信的一种，具有抗干扰、抗截获的能力，并能作到频谱资源共享。
The proposed method only needs to nansfer a scalar signal and provides higher security due to the use of hypemhaos 提出的扩频保密通信方法不仅只需传递一个标量信号，而且由于采用了超混沌系统，所设计的扩频通信系统具有更高的保密性。
3 . deeply studying the spread spectrum communication principle , the thesis designs a receiver scheme specially for this communication system 深入研究了支持fdma - cwtdm转换的扩频通信系统，提出了支持该系统的扩频接收机的实现方案。
The spre & ling codes which have the good correlation property and randomness property are important to the qualifications of spread ? pectrum communication system 而具有良好伪随机性和相关特性的扩频码对扩频通信系统起决定性的重要作用。
Finally , the ss baseband communication subsystem has been designed and implemented based on the fpga development platform ise 4 belonging to the u . s . xilinx company 最后用xilinx公司的最新的fpga开发平台ise4实现了一个基带扩频通信系统。
In sess , the special way producing the spreading codes determines that the spreading codes are more important in sess communication system 在自编码扩频通信中,特殊的扩频序列产生方式决定了自编码扩频序列对于整个系统性能的影响更是巨大的。
A new hybrid spread - spectrum ( ds - fh ) communication mode is discussed in detail in this paper , walsh sequence is used as frequency - hopping sequence in this mode 本文将讨论一种新型的ds - fh混合扩频通信系统。在这种系统中，使用walsh函数序列作为跳频序列。
