It mainly contains the digital modulate system, the SS communication theory and the directsequence spread spectrum (DSSS) system.
主要是数字调制系统、扩展频谱通信原理和直接序列扩频系统等内容。
2
It is studied that the code acquisition technology of directsequence spread spectrum system in LEO satellite communication.
研究了用于低轨卫星通信的直接序列扩频系统的码捕获技术。
3
In directsequence spread spectrum communication system, enemy is assumed to detect whole PN sequence chip by chip and a modulated retransmitted interference is created.