摘要
研究了星座可变的自适应正交振幅调制(Quadrature Amplitude Modulation,QAM)方案,并给出其统一星座标签的构建方法。利用Xilinx公司的System Generator进行建模仿真。仿真表明,所提出的调制方案可以根据控制信号的不同,实现在4QAM,16QAM,64QAM,256QAM等多种调制方式之间切换,且统一星座标签的应用使硬件实现时资源节省。
In the paper,an adaptive QAM scheme of variable constellation is proposed. Besides, an encoding method to construct unified constellation is given. During design, modeling and simulation are conducted using a simulation tool, which is named System Generator and developed in Xilinx. The result of simulation shows that the modulation systems as 4QAM, 16QAM ,64QAM,256QAM can switch freely according to different control signals. Furthermore, some hardware resources can be saved by using the unified codes.
出处
《电视技术》
北大核心
2012年第9期92-95,147,共5页
Video Engineering
基金
桂林电子科技大学"十一五"重大科技项目(UF09026Y)
关键词
自适应调制
星座可变
QAM
adaptive modulation
variable constellation
QAM
