大学英语词汇短语释义解析及例句 quadrature amplitude modulation


释义：

quadrature amplitude modulation 正交调幅

例句：



Quadrature Amplitude Modulation (QAM) is used to transfer signals by digital TV system based on DVB_C standard.

基于DVB_C标准的数字电视系统采用正交幅度调制(QAM)传送信号。



QAM (Quadrature Amplitude modulation) has been widely used in various digital communication systems due to its high modulation efficiency.

正交幅度调制(QAM)具有较高的调制效率，被广泛应用于各种数字通信系统中。



The paper analyzes the interference rejection of Quadrature amplitude modulation signals in the presence of carrier phase jitter, sinusoidal interference and white Gaussian noise.

文章分析了存在载波相位起伏、正弦干扰、高斯白噪声时正交调幅数字系统的抗扰性。



From this point, M-ary Quadrature Amplitude modulation (MQAM), MultiCarrier modulation (MCM) and adaptive modulation techniques are good candidates in next generation mobile radio system.

从这一点出发，多元正交幅度调制(MQAM)、多载波调制(MCM)及自适应调制技术成为下一代移动无线系统中最有竞争力的几种候选技术。