People tend to unconsciously use extra information while listening so as to accept the useful information in the least time with the least energy, which makes information receiving more efficient.

在听他人的话语获取信息的过程中人们不自觉地利用富余信息，从而在较少的时间内以较少的精力接收所需的信息，使信息的接收更加有效。

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Generally, in CDMA mobile communication system, the sink's receiving signals are composed of multi-user's useful information and channel noise.

通常在CD MA移动通信系统中，接收端的接收信号由多个用户的有用信息和信道噪声组成。

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