摘要
在遥感图像分辨率要求急剧提高的今天,高阶调制方式成为必要之举。抗噪声理论性能是研究各种调制方式的首要考虑因素,然而关于M-APSK至今没有理论性能的简洁公式表达。提出了一种解调抗噪声理论性能估计的方法,对于原函数的积分形式采用数值积分,分别给出了方形和扇形区域的解决方案。实验发现,对于M-PSK、QAM等传统调制方式的估计结果与公式结论高度吻合,方法可用于M-APSK及更多新型调制方式的理论性能估计,达到很高的精度。
Anti-noise theoretical performance is the primary concern when researching on modulation mode, and it will be an important reference for further engineering design. This paper proposes a new method to estimate anti-noise theoretical performance of demodulation based on numerical integration. The solution to square area and the solution to fan area are given respectfully. The estimated results coincide with the conclusions of formulas in tra- ditional modulation mode such as MPSK and QAM. This method can be used for theoretical performance estimation of new high-order modulation mode such as APSK.
出处
《科学技术与工程》
北大核心
2013年第14期4083-4088,4098,共7页
Science Technology and Engineering
基金
中国科学院高分数据地面接收系统先期攻关项目资助
关键词
数值积分
理论性能估计
APSK
工程参考
numerical integrationtheoretical performance estimation APSK reference for engineering
