本文研究了将智能天线与多用户联合检测结合使用的原理、方法和实现过程。文中详细讨论了多用户的CDMA系统在阵列天线接收时的信号模型和实现联合检测的算法模型,重点分析和论证了在使用智能天线的情况下,将该模型进行优化和简化的可行性,研究了将两者结合使用后系统所具有的性能和存在的问题,最后给出了对主要性能的仿真结果。 This paper studies the principle, method and implementation of the smart antenna combined with multi-user joint detection. This paper discusses in detail the signal model of multi-user CDMA system when receiving array antenna and the algorithm model of joint detection. The feasibility of optimizing and simplifying the model with the smart antenna is emphatically analyzed and demonstrated. After the combination of the two, the system has the performance and the existing problems, and finally gives the simulation results of the main performance.