MIMO多载波系统中的混合多用户检测器  

Blend Multiuser Detecters and Application in MIMO Multi-Carrier Systems

作　　者：周德祥[1] 孙宜贵[1] 谭玉波[1] 

机构地区：[1]河南工业大学信息科学与工程学院,河南郑州450001

出　　处：《计算机仿真》2010年第8期107-109,329,共4页Computer Simulation

摘　　要：研究无线移动通信优化问题,为了进一步提高检测性能,减少误码率,基于多用户检测算法和独立分量分析算法,提出了MIMO-OFDM系统中两种改进的混合多用户检测器,利用基于独立分量分析二次处理的解相关检测和最小均方误差多用户检测的方法,分别用解相关检测和MMSE检测的输出来初始化独立分量分析的迭代,既利用了信源的独立性,又充分利用了已知扩频码的信息,保证了算法的收敛速度能够满足多用户检测的实时要求。仿真结果表明,提高了系统的检测性能,证明两种检测器的误码性能好于传统的检测器。In order to further improve the detection performance of the traditional independent component analysis algorithm,two blend multiuser detectors of MIMO-OFDM system are proposed based on the classical Multiuser detection algorithms and independent component analysis algorithms.The blend Multiuser detectors take the advantages of the secondary processing of decorrelation and minimum mean square error detection based on independent component analysis algorithm,and use the results of DEC and MMSE detection to initialize the independent component analysis algorithm.The algorithms take advantage of the independence of information source and make the fully use of the information of the known spread spectrum code.This Guarantees that the convergence speed can meet the demands of real-time multi-user detection and that the detection performance is improved.Simulation results show that the proposed algorithms are superior to the conventional algorithm under the ideal SNR situation.

关 键 词：多用户检测 解相关 最小均方误差 误码率 

分 类 号：TN92[电子电信—通信与信息系统] TN914.53[电子电信—信息与通信工程]