quadrature amplitude modulation

The QAM technology used in HDTV;

一种用于数字电视中的正交振幅调制技术

QAM modulation is widely used in various of Digital transmission .

正交振幅调制技术(QAM)由于其高的频带利用率和相对低的误码率而被定为很多数字通信系统的数字传输标准。

This paper proposed a modem based on adaptive equalization and QAM in oil logging for cable telemetry communication systems with high date rate.

提出一种适用于石油测井领域高速电缆遥测通信系统,基于自适应均衡和QAM正交振幅调制技术的调制解调器的原理和实现方法。

The method is based on the THP precoder and single carrier quadrature amplitude modulation.

为了在恶劣复杂的电力线多径信道上传输高速的数字信号,该文提出了一种新的电力线通信(PLC)方式——基于THP预编码的单载波正交振幅调制(QAM)方案。

The principle of MQAM modulation and demodulation was outlined,and variable rate QAM,which could improve the spectral efficiency distinctly,was introduced in detail,its particular application in EDSL System was also discussed in this paper.

概述多电平正交振幅调制(MQAM)调制解调的一般原理,介绍一种能有效提高频谱利用率的变速率调制技术,并论述它在EDSL系统中的具体应用。