基于混沌寻优的CDMA最佳多用户检测方法

Chaos Search for Implementing an Optimal Multiuser Detection in CDMA System

混沌运动广泛存在于非线性系统中，它具有遍历性与随机性等优良性质，且在某个域内不可重复的走向每个状态。本文利用混沌的这些优良品质提出了实现码分多址（ＣＤＭＡ）系统上最佳多用户检测的一种混沌寻优方法。计算机模拟表明：我们提出的算法具有能克服多址干扰，能寻优到全局极小点，以及能抑制噪声干扰等优点，这为研究ＣＤＭＡ系统上的最佳多用户检测器开辟了一条新的途径。

Chaos often exists in nonlinear system. It has many good properties. Such as ergodicity, stochastic and so on. A chaos motion can go nonrepeatedly through every states in a certain domain. In this paper, A chaos search for implementing optimal multiuser detection in Code-Division Multiple-Access(CDMA)system has been proposed. Computer simulation illustrate that this algorithm has many powerful abilities, such as suppressing multiple access interference, near-far resistance properties and can converge to global minimum point. Our method open a new way for implementing optimal multiuser detection in CDMA system.