Due to non orthogonality of signaturesequence, performance of linear detector is much less than that of the optimum detector that is nonlinear.
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。
2
As you might guess from looking at the sequence of visitor method calls, some of these calls effectively open a new context for an embedded type signature component.