Baud rate is the amount of times per second a signal within a communication channel changes. For example, a one thousand baud rate means that it can change a thousand times per second. Baud rate also refers to a state of connection; for example, its voltage, frequency or phase level. In very simple terms, baud rate is the speed at which data is transmitted. Baud rate is associated with modems, digital televisions, telephones and other technical devices. A higher baud rate is preferred to send faster transmissions.
Baud rate is named after J. M. Emile Baudot (1845-1903). He was a French telegraph engineer. He is recognized for creating the first uniform-length 5-bit code for characters of the alphabet in the late 19th century. Baud really refers to modulation rate or the number of times per second that a line changes state.
How to determine Baud Rate
Baud can be determined by using the following formula: baud equals to the gross bit rate divided by the number of bits per symbol (Bd= gross bit rate/number of bits per symbol).
You can use this formula to convert Baud rate to bit rate. You simply need to calculate Bit rate which is equal to Bit rates per symbol or bit rate which is equal to symbol rate.
The difference between Bit Rate and Baud Rate
The amount of data transmitted per second is a Bit Rate; whereas a baud rate a Baud Rate is the measurement of the number of times per second a signal in a communications channel changes. Bit rates measure the number of data bits (that’s 0′s and 1′s) transmitted in one second in a communication channel.
The main difference between Baud Rate and Bit Rate is that one change of state can transmit one bit which depends on the kind of modulation used. The bit bate (bps) and baud rate (baud per second) have this connection:
Bps = baud per second x the number of bit per baud
The number of bit per baud is determined by the modulation technique.