contador Saltar al contenido

Difference between bit rate and baud rate

Bit rate

is Baud rate, these two terms are often used in data communication. The bit rate is simply the number of bits (i.e., 0 and 1) transmitted in units of time. While Baud rate the number of signal units transmitted per unit of time it takes to represent those bits.

The crucial difference between bit rate and baud rate that a change of state can transfer a bit, or slightly more or less than a bit which is based on the modulation technique used. Hence, the given equation defines the relationship between the two:

Bit rate = baud rate x the number of bits per baud

If we talk about computer efficiency, the bit rate is the most important where we want to know how long it takes to process each information. But when we are more concerned with how this data is moved from one place to another, we emphasize the baud rate. The less signals required, the more efficient the system and less bandwidth needed to transmit more bits.

An analogy can illustrate the concept of bauds and bits. In transport, a baud comparable to a bus, somewhat analogous to a passenger. A bus can carry multiple passengers. If 1000 buses pass from one point to another carrying only one passenger (the driver), 1000 passengers are transported. However, if each bus carries twenty passengers (suppose), 20,000 passengers are transported. In this case, buses determine the traffic and not the number of passengers, therefore larger motorways are needed. Likewise, the baud rate determines the required bandwidth, not the number of bits.

Comparative chart

Basis for comparison Bit rate Baud rate
Basic Bit rate is the bit count per second. The transmission speed is the count of the signal units per second.
Sense Determines the number of bits traveled per second. Determines how many times the state of a signal changes.
Term usually used While the emphasis on computer efficiency. While the transmission of data on the channel more concerned.
Bandwidth determination Unable to determine bandwidth. It can determine how much bandwidth is needed to send the signal.
Equation Bit rate = baud rate x the bit count per signal unit Baud rate = bit rate / number of bits per signal unit

Definition of Bit Rate

The bit rate can be defined as the number of intervals of bit per second. And the bit range indicated as the time required to transfer a single bit. In simpler words, the bit rate is the number of bits sent in a second, usually expressed in bits per second (bps). For example, kilobits per second (Kbps), Megabits per second (Mbps), Gigabits per second (Gbps), etc.

Definition of Baud Rate

The transmission speed expressed in the number of times a signal pu to change on the transmission line per second. Usually, the transmission line uses only two signal states and makes the transmission rate equal to the number of bits per second that can be transferred.

An example can illustrate this. For example, 1500 baud rate shows that the channel status can change up to 1500 times per second. The meaning of changing state means that the channel can change its state from 0 to 1 or from 1 to 0 up to 1500 times per second (in the specific case).

Key differences between bit rate and baud rate

  1. The bit rate is the number of bits (0 and 1) transmitted per second. On the other hand, the transmission speed is the number of times a signal travels made up of bits.
  2. The transmission speed can determine the width of band of the channel or its quantity required to send the signal while via Bit rate not possible.
  3. The bit rate can be expressed by the given equation: Bit rate = baud rate x the number of bits per signal unit On the contrary, the Baud velocity expressed in the given equation: Baud rate = bit rate / number of bits per signal unit

Conclusion

Bit rate and Baud rate, both terms are used in the same way to examine the data rate. But, the bit rate is used when we want to know the number of bits transmitted per unit of time while the bit rate is used when we want to know the number of signal units transmitted per unit of time.