基于ε近似算法的FIR-MIMO系统复信号盲检测  

Blind complex signal detection for FIR-MIMO system based on ε approximation algorithm

作　　者：徐小阳[1] 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,江苏南京210045

出　　处：《西安邮电学院学报》2011年第5期35-38,共4页Journal of Xi'an Institute of Posts and Telecommunications

摘　　要：为了提高传输性能,实现FIR-MIMO系统下QPSK复信号的高效、快速盲检测,通过矩阵变换的方法把实信道下QPSK信号盲检测问题转化为二值约束下的二次规划问题,然后使用ε近似算法对其进行求解,实例仿真结果表明:在FIR-MIMO信道可含公零点的情况下,与子空间方法相比,该算法具有更好的性能和更大的适用范围。In order to improve the transmission performance of QPSK complex signal, a new method of blind detection based on e-approximation algorithm is proposed. By this method, the blind detection problem of a QPSK signal sequence can be transformed, with matrix transformation, into a binary constrained quadratic programming problem, which can be solved by using the e-approximation algorithm. Simulation results show that, compared with the classical subspace algorithm for the FIR-MIMO channel with possible common zeros, the proposed one is of more effective performance and larger applicable area.

关 键 词：有限字符集 公零点 多输入多输出 均衡器 盲检测 

分 类 号：TN911.5[电子电信—通信与信息系统]