Network2/Concept/Capacity: Difference between revisions

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Suppose that Alice is trying to send messages to Bob over a noisy channel like a radio link.
Suppose that Alice is trying to send [[Network2/Concept/Protocol|messages]] to Bob over a noisy channel like a radio [[Network2/Concept/Link|link]].


No matter what sort of link they possess, there are only finitely many different messages that Bob might reliably receive from Alice in a single unit of time.
No matter what sort of link they possess, there are only finitely many different messages that Bob might reliably receive from Alice within a single unit of time. This quantity is the capacity of their link.


This quantity is the capacity of their link. Link capacity is typically expressed in bits per second or some unit derived therefrom like Mbps (mega-bits per second).
Link capacity is typically expressed in bits per second or some unit derived therefrom like Mbps (mega-bits per second).

Revision as of 05:47, 12 August 2009

Suppose that Alice is trying to send messages to Bob over a noisy channel like a radio link.

No matter what sort of link they possess, there are only finitely many different messages that Bob might reliably receive from Alice within a single unit of time. This quantity is the capacity of their link.

Link capacity is typically expressed in bits per second or some unit derived therefrom like Mbps (mega-bits per second).