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By the debugging, the coding of speech is realized; m sequence is produced. Moreover, the spread of signal frequency spectrum is realized.
通过调试实现了语音的编码、产生了m序列，并实现了信号频谱的扩展。
Pseudo random sequence has broad applications in stream cipher, channel coding, and spread spectrum communication.
序列在流密码、信道编码、频通信等领域有着广泛的应用。
On the sending end, the paper focuses on Error Control Coding, Waveform Shaping, Spread Spectrum and 8PSK modulation, etc.
在发送端，主要研究了差错控制编码，波形成形、扩频和8PSK调制等关键技术；
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