Pulse amplitude modulation (PAM) is one form of the ways, in which it is widely used in the system of communication and control.
脉冲幅度调制波（PAM）是脉冲调制的一种形式，在通信和控制系统中得到广泛应用。
It is a key problem to detect the ultrashort pulse in optical communication system.
在光纤通信系统中，超短光脉冲的检测一直是一个重要的问题。
These functions are realized by the circuits of power, clock, memory, ultrasonic pulse signal occurs and handle, temperature gathered and serial communication in system.
这些功能的实现是通过系统中电控部分的电源、时钟、存储、超声波脉冲信号发生、处理、温度采集、串行通信电路实现的。
It introduces the overall design of the system in chapter two, formed mostly with precondition of pulse, enlarge signal, Low-Pass Filter, AD Conversion, Serial Communication, waveform showing etc.
第二章介绍了系统的总体设计方案，它主要由脉搏信号预处理、信号放大、低通滤波、AD转换、串行通信、波形显示等几部分组成。
With the LFM pulse frame synchronization method, the performance of UWA communication system based on DPSK is apparently improved.
同时运用线性调频脉冲帧同步法，改善了基于差分相移键控的水声数字通信系统的性能。
Doubly orthogonal PSWF pulse is an ideal pulse according with the requirements of UWB communication system.
双正交pSW F脉冲是符合UW B通信系统要求的一种性能较理想的脉冲。
The selection principle of the template pulse for IR-UWB communication system is also investigated.
最后，文中还对IR-UWB通信系统接收机模板信号的选取原则做了初步的探讨。
The factors which result in pulse stretch in free-space optical communication are analyzed, including atmospheric dispersion, atmospheric turbulence influence and optical system influence.
针对自由空间光通信系统，分析了大气色散、大气湍流以及光学系统对光脉冲信号展宽的影响。
For a UWB communication system, by using differential characteristic of Herz magnetic dipole antenna, the narrow pulse can be produced from the rise edge of input square-wave signal.
在UWB通信中，利用赫兹磁偶极子天线的微分特性，由输入方波的上升沿产生窄脉冲。
For a UWB communication system, by using differential characteristic of Herz magnetic dipole antenna, the narrow pulse can be produced from the rise edge of input square-wave signal.
在UWB通信中，利用赫兹磁偶极子天线的微分特性，由输入方波的上升沿产生窄脉冲。
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