摘要
文中在考虑锁相环产生的本振信号存在相位噪声的情况下,针对计算扩频系统的接收灵敏度,采用了分析扩频与非扩频系统收发器接收端灵敏度的计算方法,通过接收机灵敏度计算基础理论推导,得出在考虑本振信号存在相位噪声时扩频系统接收灵敏度的计算方法;最后对推导出的灵敏度计算结果进行了总结分析,并得出接收灵敏度与相位噪声、热噪声、带宽、接收端的噪声指数、输出最小信噪比以及扩频增益的关系。
In consideration of the phase-locked loop to generate the local oscillator phase noise, for the calculation of the receiver sensitivity of the spread spectrum system, the analysis of the spread spectrum and non-spread spectrum transceiver system receiving end sensitivity calculation method, through the receiver sensitivity is calculated on the basis of theoretical derivation and derived in consideration of the vibration signal in the presence of phase noise spread spectrum system receiving sensitivity calculation method; finally the derived sensitivity are calculated and the results are analyzed and draw receiver sensitivity and phase noise, thermal noise, bandwidth, receive end noise index, output minimum signal- to-noise ratio and the relationship between the spread spectrum gain.
出处
《电子设计工程》
2017年第1期90-92,共3页
Electronic Design Engineering
