defined radio modulation 无线电调制
frequency modulation radio altimeter 调频无线电测高计
amplitude-modulation radio [电讯] 调幅无线电设备
amplitude modulation radio 幅值之比为调制比
radio frequency modulation 射频调制
amplitude modulation radio telegraph 调幅无线电报
Frequency modulation in Fm Radio 调频收音机中作调频用
They do not occur in a decided frequency, but rather through a special modulation, the radio waves identity.
他们通常不发生在确定的频率，而是通过一个特定的调治，来确定无线电波。
AM radio can be sent over larger distances, but the quality of the sound is not as good as a later kind of radio signal processing, called frequency modulation.
调幅广播可以发送更远的距离，但它的声音质量却不及后来一种被称为频率调制的无线电信号处理方式优越。
The structure of receiver in typical modulation Impulse Radio Ultra Wide Band (IR-UWB) is discussed, and the best IR-UWB receiver on AWGN cannels is given.
在分析AWGN信道特性的基础上，通过研究典型调制方式下的超宽带冲激无线电信号(IR - UWB)的接收机结构，找到了一种IR - UWB最佳接收机。
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