It USES the OVSF code to reduce the interference and USES the th code to disperse the collision in time domain.

利用OVS F码的正交性来降低各个用户之间的干扰，利用TH码的随机性将冲突随机分散在时域上面。

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One feature that provides flexibility of the so-called physical layer of the WCDMA air interface is the use of Orthogonal Variable Spreading Factor (OVSF) codes.

一个功能，它提供了灵活性在所谓的WCD MA空中接口物理层是使用正交可变扩频因子(OVS f码)码。

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Therefore, OVSF codes assigning algorithms should make full use of code resource by alleviating even eliminating code blocking and help system being fair to each kind of calls.

有效地减少甚至消除码阻塞，充分利用有限的OVSF码资源，实现公平分配成了OVSF码分配算法需要解决的问题。

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