CDMA无线通信正交分级式自适应波束接收机  

An orthogonal multistage adaptive beamforming receiver for CDMA wireless communication systems

作　　者：谢宁[1] 周渊平[1] 叶礼兵[1] 

机构地区：[1]中山大学电子与通信工程系,广东广州510275

出　　处：《通信学报》2004年第9期1-8,共8页Journal on Communications

基　　金：广东省自然科学基金重点资助项目(036593)

摘　　要：提出了一种用于CDMA无线通信系统的正交分级式空域自适应波束接收机的结构与算法。与其他相关算法相比,采用该算法后,系统误码性能有明显的改进,尤其是在由多径传播信道引起的相关性信号环境下,效果更为明显。系统采用了新颖的正交分级优化方式,只需进行简单的运算,即可决定其正交级的有关系统参数。正交级数的多少可根据信号环境来决定。系统权值系数的优化分别在各正交级中独立进行,避免了传统优化方法的复杂运算过程。An orthogonal multistage adaptive beamforming receiver for CDMA wireless communication systems is proposed. In comparison to other algorithms, the proposed beamforming receiver provides a well-satisfied performance, especially in correlated signal environment with multipath propagation channels. A novel orthogonal multistage structure is adopted to achieve the system optimization which is carried out independently at each stage. The system parameters for each stage are obtained through simple procedures, no complicated computation is required. The number of stages needed depends on the signal environment.

关 键 词：自适应天线阵列 正交分级式 MMSE准则 相关信号 

分 类 号：TN911.72[电子电信—通信与信息系统]