摘要
APSK是一种非常适合于卫星信道的调制方式,它具有较高的功率有效性和频带利用率。在相同功率的情况下具有最大的欧氏距离和高的功率利用率。针对DRSS非线性信道的特性,对16PSK信号、矩形16QAM信号、星型16QAM信号和4+12-APSK信号做出了分析和比较。并仿真比较了几种信号在DRSS非线性信道中的星座图、功率谱和比特误码率并得出结论。证明了4+12-APSK调制信号在DRSS系统中是一种高效的高阶调制方式。
APSK,as a mode of modulation,is very fit to satellite channel with high power efficiency and bandwidth utilization ratio.And it has the largest euclidean distance and the highest power utilization ratio under the situation of same power.In light of the characteristics of DRSS nonlinear channel,the study conducts analysis and comparison on 16 PSK signal.16 QAM rectangular signal.16 QAM stellated signal and 4＋12-APSK signal.Moreover,star maps,power spectrums and bit error rates of several signals in DRSS nonlinear channel are simulated and compared,and finally relative conclusion is conducted.It has been revealed that4＋12-APSK modulating signal is a high-ordered modeling mode with high efficiency in DRSS.
出处
《微型电脑应用》
2015年第7期38-40,5,共3页
Microcomputer Applications
