quadrature amplitude modulation造句
例句与造句
- Multi - level quadrature amplitude modulation
多电平正交调幅 - Qam for quadrature amplitude modulation
积分幅度调制 - Quadrature amplitude modulation qam
正交幅度调制 - Qam for quadrature amplitude modulation
四相调制 - Quadrature amplitude modulation
正交振幅调幅法 - It's difficult to find quadrature amplitude modulation in a sentence. 用quadrature amplitude modulation造句挺难的
- Quadrature amplitude modulation
正交幅度调制 - As a high band - efficiency digital modulation scheme , dvbc ( digital video broadcasting of cable ) qam ( quadrature amplitude modulation ) modulator is widely adopted in the wide - band communication area , such as hdtv broadcasting , cable modem , microwave communication , satellite communication and so on
正交幅度调制器( qammodulator )作为一种高频谱利用率的数字调制方式,在高清晰度电视( hdtv )广播、 cablemodem 、固定宽带无线接入、卫星通信、数字微波传输等宽带通信领域得到了广泛应用。 - By adopting qam ( quadrature amplitude modulation ) modulation , we have researched and implemented a high - speed data broadcasting system compatible with dvb ( digital video broadcasting ) standard in the past years , and integrated and applicated the system into sdh / hfc ( synchronous digital hierarchy / hybrid fiber coax ) network for the first time in china
经过多年的研究，开发出了符合dvb标准、采用qam调制方式的阳光网高速数据广播系统，同时在国内首次实现了基于sdh hfc网络的高速数据广播系统集成应用。 - This thesis begins with hfc network theory and docsis , analyses modulation / demodulation process of data communication in hfc . then , several theories are analysed including qam ( quadrature amplitude modulation ) , nyquist root square filter , fec ( forward error correction ) , map ( bandwidth allocation map ) . and digital signal transmission involved the other important international standard ? itu - t j . 83 annex a / b , is discussed
本文从hfc网络理论和docsis协议入手，分析了hfc数据通信的调制解调过程，对qam调制、奈奎斯特均方根滤波器、前向纠错（ forwarderrorcorrection ，简称fec ） 、 map通信等进行了阐述；还从中探讨了电缆调制解调器需要用到的另一个国际标准ituj . 83annexa / b所设计的mpeg信号的数字传输。
