摘要
从与其他通信系统相比着眼,阐明扩频通信系统具有的特殊优点,即能在负信噪比的情况下完成通信任务。以香农公式为基础,分析了在一定情况下,带宽扩展与功率提高的关系,并以Matlab为工具进行了相应的仿真分析。
As Compared with other communication systems,the spread spectrum communication system is of a special virtue, that is, it can accomplish the communication task under the circumstance of negative signal-to-noise ratio.On the basis of Shannon formula,the relationship between band spread and power improvement under certain circumstance is analyzed, and with Matlab as a mathematical tool the corresponding simulation analysis also carried out.
出处
《通信技术》
2007年第7期39-41,共3页
Communications Technology
关键词
扩频通信
信号功率
仿真分析
spread spectrum communication
signal power
simulation analysis
