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盲干扰抑制技术是在不知道系统参数 ,不需要训练序列的情况下 ,有效抑制 Direct Spread Code DivisionMultiple- Access(DS- CDMA)系统的多址干扰的有效方法。根据受限最小输出能量准则并利用空间正交投影技术 ,该文提出了一种新的基于共轭梯度算法的盲自适应干扰抑制算法。仿真分析比较表明 ,与现有的基于 L east Mean- Square(L MS)算法、基于 Recursive L east- Squares (RL S)算法等盲自适应干扰抑制技术相比 ,该算法具有收敛速度快速稳定、输出性能好、计算复杂度适中等优点
Blind interference suppression technology is an effective way to effectively suppress the multiple access interference of the Direct Spread Code Division Multiple Access (DS-CDMA) system without knowing the system parameters and without training sequence. According to the constrained minimum output energy criterion and the spatial orthogonal projection technique, a new blind adaptive interference suppression algorithm based on conjugate gradient algorithm is proposed. The simulation analysis and comparison show that compared with the existing blind adaptive interference suppression technique based on the L-Mean-Square (L MS) algorithm and the Recursive L east-Squares (RL S) algorithm, the proposed algorithm has the advantages of fast convergence, Output performance, computational complexity and other advantages