最佳多用户检测器是非线性检测器，特征码不完全正交时，线性检测器很难逼近最佳检测器。

Due to non orthogonality of signature sequence, performance of linear detector is much less than that of the optimum detector that is nonlinear.

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另外，支撑矢量机多用户检测器的非线性特性可以比线性检测器更好地逼近最优检测器。

The nonlinear support vector machine multiuser detector can approach the optimum multiuser detector in a better way than the other linear detectors.

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另外，支撑矢量机多用户检测器的非线性特性可以比线性检测器更好地逼近最优检测器。

The nonlinear support vector machine multiuser detector can approach the optimum multiuser detector in a better way than the other linear detectors.

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