Telecom & Networking

Basic

Throughput

Actual data delivered per unit time.

Formula

R = \frac{D}{t}

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Variables

RThroughput (bps)

DData transferred (bits)

tTime (s)

Example

80 Mb in 10 s: R = 8 Mbps

Did You Know?

Real throughput always trails the advertised link speed because of protocol overhead and collisions.

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More in Telecom & Networking

Shannon Channel Capacity

Maximum error-free data rate of a channel given bandwidth and signal-to-noise ratio.

Nyquist Data Rate

Maximum data rate for a noiseless channel with M signal levels.

Power Decibels

Ratio of two power levels expressed logarithmically.

Free-Space Path Loss

Signal attenuation over distance in free space (d in km, f in MHz).

Propagation Delay

Time for a signal to travel a distance at propagation speed.

Bandwidth-Delay Product

Amount of data 'in flight' on a link, setting the ideal window size.