多径CDMA信道下一种新的RLS空时接收机  

A novel RLS space-time receiver in multi-path CDMA channels

作　　者：郑建忠[1] 杨淑媛[1] 焦李成[1] 

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,陕西西安710071

出　　处：《通信学报》2003年第6期44-51,共8页Journal on Communications

摘　　要：针对多径CDMA信道下的多用户检测中出现的线性约束二次规划问题提出一种新的递归最小二乘算法,该算法可以完全避免因约束而引进的矩阵求逆运算(相对常规的递归最小二乘算法),并将这种算法与CDMA多用户系统结合起来给出了一种新的自适应接收机,仿真结果表明了这种算法是有效的(无论在检测性能上还是在收敛性能上)。We first present a novel recursive least-square (RLS) algorithm for quadratic programming based on linear constraint that appears multiuser detection in multipath CDMA channels. This method can completely avoid the matrix inversion introduced into by constraints (which relative to the normal RLS). By combining this algorithm and CDMA multiuser system, we present a novel adaptive receiver. The results of the simulations illustrate that this method is valid for the performance of detection and convergence.

关 键 词：递归最小二乘 多用户检测 直扩序列码分多址 

分 类 号：TN914.4[电子电信—通信与信息系统] TN911.23[电子电信—信息与通信工程]