设计一个理想通信系统，实现信息字符流的传输。

发射器：

<1>将消息（字符串形式）编码成一个符号序列；

<2>用脉冲成形将串符号序列转变成模拟脉冲信号；

<3>将模拟脉冲信号调制到载波信号上。

接收器：

<1>对接收的信号进行采样；

<2>解调信号成基带信号；

<3>将信号恢复成字符串。-Design an ideal communication system, the realization information transmission of character flow.

Emitters:

< 1 > will news (string form) coding into a symbol sequence

< 2 > by using a pulse forming will string of symbols into a simulation pulse signal sequences

< 3 > will simulate the pulse signal modulation to carrier signal.

Receiver:

< 1 > of received signal sampling

< 2 > demodulation signal into baseband signal

< 3 > will signal back into a string.