为在两个设备间交换数据，数据比特必须经过信道进行传输。数据比特被编码成一种可被信道另一端识别的信号。一个信号的编码比特越多，信号就越复杂，正确辨认它也就越困难。因此，在一条信道内。每单位时间内能够舆输的最大比特数受香农定理的限制。根据这一定理，信道上最大? To exchange data between two devices, the data bits must be transmitted over the channel. The data bits are encoded into a signal that can be recognized by the other end of the channel. The more bits a signal encodes, the more complicated the signal becomes and the more difficult it is to recognize it correctly. So in a channel. The maximum number of bits that can be transmitted per unit of time is limited by Shannon’s theorem. According to this theorem, the largest channel?