摘要
多进制正交幅度调制,结合了幅度和相位两个要素,信号均匀分布,频谱利用率高。文中介绍了正交幅度调制解调原理,通过系统仿真实验,对16QAM的调制解调过程、原理进行了论证分析,给出了高斯白噪声干扰下的误码率。仿真实验结果说明了,多进制正交幅度调制解调功率、带宽高效,易于实现,误码率低,抗干扰能力强。
Multiple quadrature amplitude modulation, combined with two elements of amplitude and phase, will result in even signal distribution, high spectrum efficiency. This paper introduces the principle of quadrature amplitude modulation, demon- strates and analyze the process and principle of 16 QAM, presents the error rate under white Gaussian noise. Experimental re- sult shows multiple quadrature amplitude modulation hao power and bandwidth efficiency, is easy to implement, hao low error rate, strong anti-jamming capability.
出处
《微型电脑应用》
2017年第2期75-77,共3页
Microcomputer Applications
关键词
多进制正交幅度调制
信号
频谱
误码率
Multiple quadrature amplitude modulation
Signal
Frequency spectrum
Error rate
