一种卫星通信的16APSK软解调方法  

One Method of Soft Demapping for 16APSK Used for Satellite Communication

作　　者：高时汉 熊韬 杨碧水 GAO Shihan;XIONG Tao;YANG Bishui(Guangzhou Haige Communication Industry Group Co.,Ltd,Guangzhou 510663,China)

机构地区：[1]广州海格通信集团股份有限公司,广东广州510663

出　　处：《无线电通信技术》2021年第3期329-332,共4页Radio Communications Technology

摘　　要：针对高通量卫星通信中所使用的高阶调制16APSK,提出了一种运算复杂度低且具有良好性能的软解调算法。针对接收信号在传输信道中受到各种增益的影响,而导致接收星座与发送星座的半径会有不同的问题,提出了一校正算法使得接收符号与发送符号的所在圆半径基本一致,在此基础上利用信号幅度在不同比特位置展现的不同特性对星座点加以区分。仿真结果表明所提出的算法运算复杂度较低,具有良好的性能。The paper proposes a good and low complexity method for soft demapping 16 APSK,which is always used for high throughput satellite communication.Firstly,the received constellations whose radius have been changed due to transmission channels is corrected.Then the points on corrected constellation are distinguished according to signal amplitude.Simulation result shows that the low complexith method have a good performance.

关 键 词：16APSK 软解调 星座图 

分 类 号：TN927[电子电信—通信与信息系统]