一种CDMA系统中的智能天线算法

A Smart Antenna Algorithm for CDMA System

本文根据CDMA系统的特点提出了一种新的智能天线算法，该算法利用CDMA系统解扩后有用信号远大于其他用户信号的特点，通过求得每根天线与第一根天线的信号相关矩阵的特征向量来确定智能天线的加权系数。分析和仿真表明，该算法具有复杂度低、计算量小、收敛速度快、不需要参考信号等优点。

This paper presents a new smart antenna algorithm. Based on the characteristic that in CD- MA system desired signal is much larger than other signals after despreading, the algorithm uses eigenvectors of each autocovariance matrix of the first element and one of the other elements to form the weight vector. After analyses and simulation, we can find that the new algorithm has advantages of low complexity, small computational load, fast convergence, needing no reference signal.