半可逆MIMO信道多值信号盲检测  

Blind detection for multi-valued signals for semi-reversible MIMO channel

作　　者：范乐园 唐加山[2] 

机构地区：[1]南京邮电大学通信与信息工程学院,江苏南京210003 [2]南京邮电大学理学院,江苏南京210023

出　　处：《微型机与应用》2014年第12期57-60,共4页Microcomputer & Its Applications

摘　　要：针对多输入多输出(MIMO)实信道系统,在较弱的半可逆条件下,为实现该系统中实多值信号的高效、快速盲检测,采用直接盲多用户检测,将多值信号转化成二值信号的线性组合,通过矩阵变换的方法把多值信号盲检测问题转化为一个带约束的二次规划问题,通过对转化后的优化问题的处理实现信号的盲检测,并以4PAM信号为例进行了仿真。仿真结果表明,与经典的子空间算法相比,该算法表现出了良好的性能和更广泛的应用范围。This paper focus on the Multi-Input Multi-Output （ MIMO ） system . On the semi-reversible condition which is a weaker criteria , in order to improve transmission performance and detect the real multilevel signals efficiently and quickly in MIMO systems , this paper uses direct blind multiuser detection , transforms the multi-valued signals into a linear combination of binary signals . Then it transforms the problem of blind detection of a sequence of multilevel signal into a binary constrained quadratic pro-gramming problem using the matrix transformation method . At last , it conducts the transformed optimization problem . This paper uses 4PAM as an example , simulation results illustrate that comparing with the classical subspace algorithm , the algorithm proposed in this paper has good effective performance and large applicable area .

关 键 词：公零点 多输入多输出 多值信号 均衡器 盲检测 

分 类 号：TN911.5[电子电信—通信与信息系统]