Data rate and data transfer rate can refer to several related and overlapping concepts in communications networks:
Achieved rate
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Bit rate
In telecommunications and computing, bit rate (bitrate or as a variable ''R'') is the number of bits that are conveyed or processed per unit of time.
The bit rate is expressed in the unit bit per second (symbol: bit/s), often in conjunction ...
, the number of bits that are conveyed or processed per unit of time
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Data signaling rate
In telecommunications, data signaling rate (DSR), also known as gross bit rate, is the aggregate rate at which data passes a point in the transmission (telecommunications), transmission data link, path of a data transmission system.
Properties
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or gross bit rate, a bit rate that includes protocol overhead
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Symbol rate
In a digitally modulated signal or a line code, symbol rate, modulation rate or baud is the number of symbol changes, waveform changes, or signaling events across the transmission medium per unit of time. The symbol rate is measured in '' baud ...
or baud rate, the number of symbol changes, waveform changes, or signaling events across the transmission medium per unit of time
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Data-rate units, measures of the bit rate or baud rate of a link
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Data transfer rate (disk drive), a data rate specific to disk drive operations
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Throughput
Network throughput (or just throughput, when in context) refers to the rate of message delivery over a communication channel in a communication network, such as Ethernet or packet radio. The data that these messages contain may be delivered ov ...
, the rate of successful message delivery, or level of bandwidth consumption
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Transfers per second
Capacity
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Bandwidth (computing)
In computing, bandwidth is the maximum rate of data transfer across a given path. Bandwidth may be characterized as network bandwidth, data bandwidth, or digital bandwidth.
This definition of ''bandwidth'' is in contrast to the field of signal ...
, the maximum rate of data transfer across a given path
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Channel capacity
Channel capacity, in electrical engineering, computer science, and information theory, is the theoretical maximum rate at which information can be reliably transmitted over a communication channel.
Following the terms of the noisy-channel coding ...
, an information-theoretic upper bound on the rate at which data can be reliably transmitted, given noise on a channel
Temporal rates
Broad-concept articles
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