摘要
为提高卫星资源的利用率 ,充分利用卫星通信系统的设计备余量 ,讨论了利用窄带系统的备余量来传输类似于噪声的宽带扩频信号的有关问题 ,并为宽带扩频信号的传输建立了相应的系统模型。分析了在给定窄带系统备余量 ,当窄带信号占用不同卫星资源时该宽带扩频系统的容量 ,得到了窄带信号传输不受影响的情况下该系统能容纳的最大宽带用户数及相应各宽带用户信号的功率上限 。
To improve the efficiency of satellite resource and the sufficient use of the design margins of the systems, some problems about transmitting the wideband spread spectrum under the margins of narrowband systems were discussed in this paper. One model of wide-band spread spectrum signal transmission was set up and the capacity of the system was analyzed. Under some margin, when narrowband signal occupied the different satellite resource, the most user numbers admitted by the wideband system and the upper bound of corresponding wideband signal power were obtained in this paper. This provides reference for building the network of satellite communication theoretically.
出处
《解放军理工大学学报（自然科学版）》
EI
2004年第5期1-4,共4页
Journal of PLA University of Science and Technology(Natural Science Edition)
基金
江苏省自然科学基金资助项目 ( BK2 0 0 10 2 3 )
关键词
多址干扰
宽带扩频
码分多址
multiple access interference
wide-band spread spectrum
CDMA(code division multiple access)
