It is a story of humanity coming to an end and everyone pinning their hopes on a group of astronauts who go out to explore space and spread humanity to another planet.
故事讲的是人类已经走到了尽头，所有人都把希望寄托在最后一小群宇航员身上，希望他们能探索外太空并把人类的火种传播到其他星球上。
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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