摘要
为了提升APSK调制在多径信道中的使用性能,提出基于误码率分析的新星座构造方法,该方法通过星座点的旋转,能很好的对抗多径失真对信号的影响。本文以32APSK为例进行星座优化,通过计算机仿真搜索,得到32MAPSK调制星座的最优旋转角度。仿真表明,该方法不需要增加任何硬件设备,具有简便、性能提升明显的特点。
In order to improve the performance of APSK in multipath channel,the constellation construction method based on bit error rate analysis was proposed which have a better performance to against the multipath distortion on the signalis by rotate the constellation points.The 32APSK was used to constellation optimization by an example and the optimal rotation angle of the 32MAPSK modulation constellation was achieved by computer simulation.Simulation results show that the method does not need any additional hardware devices,in addition,it have the merit of simple operation and performance improve significantly.
出处
《电子设计工程》
2013年第21期167-170,共4页
Electronic Design Engineering
关键词
32APSK
多径衰落
成对差错概率
星座旋转
32APSK
multipath fading
pairwise error probability
constellation rotation
