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Gross bit rate

The aggregate rate at which data pass a point in the transmission path of a data transmission system.

In telecommunication, data signaling rate (DSR), also known as gross bit rate, is the aggregate rate at which data pass a point in the transmission path of a data transmission system.

- The DSR is usually expressed in bits per second.
- The data signaling rate is given by ∑ i = 1 m log 2 n i T i {\displaystyle \sum _{i=1}^{m}{\frac {\log _{2}{n_{i}}}{T_{i}}}} \sum _{{i=1}}^{{m}}{\frac {\log _{2}{n_{i}}}{T_{i}}} where m is the number of parallel channels, ni is the number of significant conditions of the modulation in the i-th channel, and Ti is the unit interval, expressed in seconds, for the i-th channel.
- For serial transmission in a single channel, the DSR reduces to (1/T)log2n; with a two-condition modulation, i. e. n = 2, the DSR is 1/T, according to Hartley's law.
- For parallel transmission with equal unit intervals and equal numbers of significant conditions on each channel, the DSR is (m/T)log2n; in the case of a two-condition modulation, this reduces to m/T.
- The DSR may be expressed in bauds, in which case, the factor log2ni in the above summation formula should be deleted when calculating bauds.
- In synchronous binary signaling, the DSR in bits per second may be numerically the same as the modulation rate expressed in bauds. Signal processors, such as four-phase modem the aggregate rate at which data pass a point in the transmission path of a data transmission system.s, cannot change the DSR, but the modulation rate depends on the line modulation scheme, in accordance with Note 4. For example, in a 2400 bit/s 4-phase sending modem, the signaling rate is 2400 bit/s on the serial input side, but the modulation rate is only 1200 bauds on the 4-phase output side.

acronymn

- DSR

also known as

- Gross bit rate

source

Adapted from content published on wikipedia.org

Last modified on March 23, 2020, 9:48 pm

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