Orthogonal variable spreading factor: Difference between revisions

Revision as of 16:27, 15 August 2009

Revision as of 11:12, 17 December 2009

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[[Image:Drzewo ciagow ortogonalnych.png|thumb|280px|OVSF code tree]]

'''Orthogonal variable spreading factor''' ('''OVSF''') is an implementation of [[Code division multiple access]] (CDMA) where before each signal is transmitted, the [[Spread spectrum|spectrum is spread]] through the use of a user's code. User's codes are carefully chosen to be mutually [[orthogonal]] to each other.

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These codes are derived from an OVSF code tree, and each user is given a different, unique code. An OVSF code tree is a complete [[binary tree]] that reflects the construction of [[Hadamard matrix|Hadamard matrices]].

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