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This article shares with you what are two important indicators of the quality of Internet communications. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

There are two important indicators of the quality of Internet communication, namely, the transmission rate and the bit error rate. The transmission rate refers to the number of bits transmitted per second, which is an important indicator of serial communication and is used to characterize the rate of data transmission, while the bit error rate is an index to measure the accuracy of data transmission within a specified period of time.

There are two important indicators of the quality of Internet communication, namely, the transmission rate and the bit error rate.

Transmission rate

The so-called transmission rate refers to how many bits are transmitted per second, and the transmission rate is often called baud rate. There is a standard baud rate series in the world, and the standard baud rate is also the most commonly used baud rate. The standard baud rate series are 110,300,600,1200, 4800, 9600 and 19200.

The transfer rate refers to the number of bits (also known as bits) that transmit binary numbers per second, in bit/s units. Baud rate is an important indicator of serial communication, which is used to characterize the rate of data transmission. The higher the baud rate, the faster the data transmission speed. The actual transfer rate of characters is different from the baud rate. The actual transfer rate of characters refers to the number of character frames transmitted per second, which is related to the character frame format.

Each transmission time is defined as the reciprocal of the baud rate. Typically, the baud rate of asynchronous communication is between 50~9600bit/s. The baud rate is different from the sending clock and the receiving clock, and the clock rate is often 1, 16, or 64 times the baud rate. In asynchronous serial communication, the receiving device and the transmitting device maintain the same transmission baud rate and synchronize with the transmitting device with the starting bit of the character data. The conventions of the start bit, the parity bit, and the stop bit must be consistent during the same transfer in order to successfully transfer the data.

Bit error rate

Bit error rate (SER:symbol error rate) is a measure of the accuracy of data transmission within a specified period of time. BER = error code in transmission / total number of codes transmitted. If there is a bit error, there is a bit error rate. In addition, the bit error rate is defined as the frequency used to measure the occurrence of error codes. The research on bit error rate under specific conditions is of great significance to enhance the performance of wireless communication system and improve the quality of data transmission.

Bit error rate (BER) is the most commonly used quality index of data communication. It indicates that the transmission quality of a digital system is "one bit error in how many bits of data". For example, if a bit error occurs in 10, 000 bits of data, the bit error rate is 1/10000, that is, 10E-4. Bit error rate = number of error symbols / total number of transmitted symbols. The calculation formula is as follows:

Bit error rate = error bits / total transmission bits.

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