Baud rate , also known as the symbol rate, refers to the number of symbols transmitted per unit Porter (Band)
the bit rate of bits transmitted per second (bit) number.
Symbol :
In digital communication is often used to represent a binary digit interval the same reference numerals, such signals are referred to the time interval (binary) symbols. This is the
popular point of Baidu Encyclopedia's explanation . A code element can be regarded as a packet storing a certain amount of information. If only 1 bit is stored, then the baud rate is equal to the bit rate, but generally more than 1 bit is stored,
such as a string of binary information as 101010101. When the amount of information carried by one symbol is 1 bit, then there are 9 symbols, and the baud rate is equivalent to the bit rate. If every three groups of 101, 010, 101, then 8 amplitudes can be used to represent A certain symbol here is equivalent to one symbol containing 3 bits, and the number of discrete values of the symbol here is 8.
From this, the relationship between the baud rate and the bit rate can be obtained.
If the discrete number of symbols is L, the baud rate is B, and the data rate (bit rate) is C, then
C = B log₂L. (When L=2 , C=B)