| 字词 | coherent carrier recovery |
| 释义 | coherent carrier recovery 相干载波恢复 Modems designed to achieve a high ratio of bits per second per cycle of bandwidth often use coherent detection.This requires the generation of a reference carrier in the receiving modem that is accurately phased with respect to the received signal which may have undergone a frequency offset.In an AM system a straightforward method is to transmit some of the carriers used in modulation at the transmitter and detect it at the receiver by a narrow filter or phase-locked loop. 为达到每个带宽周期内高速传输率而设计的调制解调器,常常使用相干检波。它要求在接收端调制解调器中产生一个与接收信号(可能有频率偏移)精确同相的参照载波。在调幅 系统中一个直接的办法是,由发送机发送一些在调制中使用的载波;而在接收端由窄带滤波器或锁相环将其检出。 |
| 随便看 |
|
计算机英汉双解词典包含34412条计算机术语英汉翻译词条，基本涵盖了全部常用计算机术语的翻译及用法，是计算机学习及翻译工作的有利工具。