卫星通信与测量系统频谱共享信号设计

Design of Spectrum Sharing in Satellite Communication and Measurement System

信号共存是一种解决频谱资源紧张的有效方式。基于CDMA和FDMA两种典型信号对卫星通信与测量系统中信号频谱重叠共用条件进行了研究。采用系统间干扰分析法及伪码测量噪声分析法从理论上推导了2种信号间的影响,通过设计调整CDMA用户信号和FDMA用户信号的可变参数,给出了对双方通信性能及对CDMA用户测量性能的影响分析方法,并据此得到了不同参数条件下的信号共存条件。

Signal coexistence is an effective way to solve the shortage of spectrum resources.The spectrum overlapping and sharing conditions of CDMA and FDMA signals are studied in satellite communication and measurement system.The influence between the two signals is theoretically deduced by using the inter system interference analysis method and the pseudo-random code measurement noise analysis method.By designing and adjusting the variable parameters of CDMA user signal and FDMA user signal,the analysis method of the influence on the communication performance of both sides and the measurement performance of CDMA user is given,and the signal coexistence conditions under different parameters are obtained.